{"product_id":"pro-c4-retinol-serum","title":"Lira Clinical PRO C4 Retinol Serum","description":"\u003c!-- PRO C4 Retinol Serum | Lira Clinical PRO Line | Auréa Beauty\n     Meta: Lira Clinical PRO C4 Retinol Serum — 1% retinol + 4 forms Vitamin C + 4 plant stem cells for fine lines, wrinkles, acne \u0026 brightening. 1.69 fl oz. --\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"PRO C4 Retinol Serum\",\n  \"brand\": { \"@type\": \"Brand\", \"name\": \"Lira Clinical\" },\n  \"description\": \"Rejuvenate skin with Vitamin C and Retinol serum. Contains 4 forms of Vitamin C, reduces fine lines, wrinkles, and acne. Key ingredients: Retinol, Vitamin C, Swiss Apple, Alpine Rose, Sea Fennel, Licorice Extract, Olive Leaf Extract.\",\n  \"aggregateRating\": { \"@type\": \"AggregateRating\", \"ratingValue\": \"5.0\", \"reviewCount\": \"40\" },\n  \"offers\": { \"@type\": \"Offer\", \"availability\": \"https:\/\/schema.org\/InStock\" }\n}\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I use PRO C4 Retinol Serum?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Apply 1–2 pumps to cleansed skin in the evening. Follow with a Lira Clinical crème or oil. Can be used up to twice daily depending on skin condition severity. Not to be used on the eye area.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is PRO C4 Retinol Serum suitable for retinol beginners?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. At 1% retinol, PRO C4 Retinol Serum is an excellent entry-level retinol for first-time users or those who have experienced irritation with higher-concentration formulas. Estheticians frequently recommend it as a starter retinol. Begin with evening use a few times per week and increase frequency as tolerated.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What are the 4 forms of Vitamin C in PRO C4 Retinol Serum?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"PRO C4 Retinol Serum contains four distinct Vitamin C derivatives: Tetrahexyldecyl Ascorbate (BV-OSC), Ascorbyl Palmitate, Ascorbic Acid, and Citric Acid — delivering keratolytic, antioxidant, and anti-inflammatory benefits across multiple delivery pathways.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is PRO C4 Retinol Serum safe during pregnancy?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"PRO C4 Retinol Serum contains 1% Retinol. Retinol and retinoids are not recommended during pregnancy. Consult your physician before use if you are pregnant, planning to become pregnant, or breastfeeding.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does PRO C4 Retinol Serum require daily SPF?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Retinol increases skin photosensitivity. Always apply a broad-spectrum SPF 30+ sunscreen every morning while using PRO C4 Retinol Serum, even if you apply the serum at night only.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cstyle\u003e\n  .zpro6__wrap {\n    --pro-hero-bg: #d4d8de;\n    --pro-hero-bg2: #e2e6eb;\n    --pro-section-alt: #eef0f3;\n    --pro-white: #ffffff;\n    --pro-offwhite: #fafafa;\n    --pro-silver-dark: #6b7280;\n    --pro-silver-mid: #9ca3af;\n    --pro-silver-light: #c8cdd5;\n    --pro-silver-pale: #e8eaed;\n    --pro-charcoal: #1c1c2e;\n    --pro-charcoal-mid: #2e2e42;\n    --pro-charcoal-soft: #44445a;\n    --pro-ink-soft: #4a4a5e;\n    --pro-border: #ced3da;\n\n    font-family: 'DM Sans', 'Helvetica Neue', Arial, sans-serif;\n    color: var(--pro-charcoal);\n    line-height: 1.65;\n    font-size: 15px;\n    hyphens: none;\n    -webkit-hyphens: none;\n  }\n  .zpro6__wrap * {\n    box-sizing: border-box;\n    hyphens: none;\n    -webkit-hyphens: none;\n  }\n\n  \/* ── HERO ── *\/\n  .zpro6__hero {\n    background: linear-gradient(135deg, #c8cdd5 0%, #dde1e6 50%, #d4d8de 100%);\n    padding: 52px 28px 48px;\n    text-align: center;\n    border-bottom: 2px solid var(--pro-silver-light);\n  }\n  .zpro6__eyebrow {\n    display: inline-block;\n    font-family: 'Raleway', 'DM Sans', sans-serif;\n    font-size: 11px;\n    font-weight: 700;\n    letter-spacing: .18em;\n    text-transform: uppercase;\n    color: var(--pro-silver-dark);\n    margin-bottom: 14px;\n  }\n  .zpro6__hero h1 {\n    font-family: 'Raleway', 'DM Sans', sans-serif;\n    font-size: clamp(28px, 5vw, 44px);\n    font-weight: 800;\n    color: var(--pro-charcoal);\n    margin: 0 0 16px;\n    letter-spacing: .02em;\n    line-height: 1.15;\n  }\n  .zpro6__hero-sub {\n    font-size: 15px;\n    color: var(--pro-ink-soft);\n    max-width: 560px;\n    margin: 0 auto 28px;\n  }\n  .zpro6__badge-row {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 10px;\n    justify-content: center;\n    margin-bottom: 28px;\n  }\n  .zpro6__badge {\n    background: var(--pro-white);\n    border: 1px solid var(--pro-silver-light);\n    color: var(--pro-charcoal-soft);\n    font-size: 11px;\n    font-weight: 700;\n    letter-spacing: .12em;\n    text-transform: uppercase;\n    padding: 6px 14px;\n    border-radius: 20px;\n  }\n  .zpro6__badge--pm {\n    background: var(--pro-charcoal);\n    border-color: var(--pro-charcoal);\n    color: var(--pro-white);\n  }\n  .zpro6__badge--spf {\n    background: #3a3010;\n    border-color: #c8960a;\n    color: #f0c840;\n  }\n  .zpro6__badge--preg {\n    background: #3a1a2a;\n    border-color: #c87090;\n    color: #f0b0c8;\n  }\n  .zpro6__trust-icons {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 18px;\n    justify-content: center;\n  }\n  .zpro6__trust-icon {\n    display: flex;\n    align-items: center;\n    gap: 6px;\n    font-size: 11px;\n    font-weight: 600;\n    letter-spacing: .1em;\n    text-transform: uppercase;\n    color: var(--pro-silver-dark);\n  }\n\n  \/* ── RETINOL WARNING BANNER ── *\/\n  .zpro6__retinol-banner {\n    background: #2a1a1a;\n    border-top: 3px solid #c87090;\n    border-bottom: 3px solid #c87090;\n    padding: 18px 24px;\n    text-align: center;\n  }\n  .zpro6__retinol-banner strong {\n    display: block;\n    font-size: 13px;\n    font-weight: 800;\n    letter-spacing: .1em;\n    text-transform: uppercase;\n    color: #f0b0c8;\n    margin-bottom: 5px;\n  }\n  .zpro6__retinol-banner p { font-size: 13px; 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height: 6px;\n    background: var(--pro-silver-dark);\n    border-radius: 50%;\n    flex-shrink: 0;\n  }\n\n  \/* ── FRAGRANCE BANNER ── *\/\n  .zpro6__frag-banner {\n    background: #eef4f3;\n    border-left: 4px solid #5ba8a0;\n    padding: 16px 24px;\n    display: flex;\n    align-items: flex-start;\n    gap: 12px;\n  }\n  .zpro6__frag-icon { font-size: 18px; flex-shrink: 0; margin-top: 2px; }\n  .zpro6__frag-banner p { font-size: 12px; color: #2e5550; margin: 0; }\n  .zpro6__frag-banner strong { color: #1e3a38; }\n\n  \/* ── FEATURE SECTIONS ── *\/\n  .zpro6__feature {\n    padding: 48px 28px;\n    display: flex;\n    flex-wrap: wrap;\n    gap: 32px;\n    align-items: center;\n    max-width: 960px;\n    margin: 0 auto;\n  }\n  .zpro6__feature--rev { flex-direction: row-reverse; }\n  .zpro6__feat-text { flex: 1 1 300px; }\n  .zpro6__feat-visual { flex: 1 1 260px; }\n  .zpro6__feat-text h3 {\n    font-family: 'Raleway', sans-serif;\n    font-size: clamp(17px, 2.8vw, 22px);\n    font-weight: 800;\n    color: var(--pro-charcoal);\n    margin: 0 0 14px;\n    line-height: 1.25;\n  }\n  .zpro6__feat-text p { color: var(--pro-ink-soft); font-size: 14px; margin: 0 0 16px; }\n  .zpro6__feat-text ul { list-style: none; padding: 0; margin: 0; }\n  .zpro6__feat-text li {\n    display: flex;\n    gap: 10px;\n    align-items: flex-start;\n    margin-bottom: 10px;\n    font-size: 14px;\n    color: var(--pro-ink-soft);\n  }\n  .zpro6__li-icon { color: var(--pro-silver-dark); font-weight: 900; font-size: 13px; margin-top: 2px; flex-shrink: 0; }\n  .zpro6__card {\n    background: var(--pro-silver-pale);\n    border: 1px solid var(--pro-border);\n    border-radius: 10px;\n    padding: 24px;\n  }\n  .zpro6__card--white { background: var(--pro-white); }\n  .zpro6__card-title {\n    font-family: 'Raleway', sans-serif;\n    font-size: 13px;\n    font-weight: 800;\n    letter-spacing: .12em;\n    text-transform: uppercase;\n    color: var(--pro-silver-dark);\n    margin-bottom: 14px;\n  }\n  .zpro6__ing {\n    padding: 10px 0;\n    border-bottom: 1px solid var(--pro-border);\n    font-size: 13px;\n  }\n  .zpro6__ing:last-child { border-bottom: none; }\n  .zpro6__ing-name { font-weight: 700; color: var(--pro-charcoal); display: block; margin-bottom: 2px; }\n  .zpro6__ing-desc { color: var(--pro-ink-soft); }\n\n  \/* ── RESULTS STRIP ── *\/\n  .zpro6__results {\n    background: var(--pro-hero-bg);\n    border-top: 1px solid var(--pro-border);\n    border-bottom: 1px solid var(--pro-border);\n    padding: 36px 20px;\n    text-align: center;\n  }\n  .zpro6__results h3 {\n    font-family: 'Raleway', sans-serif;\n    font-size: 18px;\n    font-weight: 800;\n    color: var(--pro-charcoal);\n    margin: 0 0 24px;\n    text-transform: uppercase;\n    letter-spacing: .1em;\n  }\n  .zpro6__chips {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 12px;\n    justify-content: center;\n    max-width: 800px;\n    margin: 0 auto;\n  }\n  .zpro6__chip {\n    background: var(--pro-white);\n    color: var(--pro-charcoal-soft);\n    font-size: 12px;\n    font-weight: 700;\n    letter-spacing: .08em;\n    padding: 10px 20px;\n    border-radius: 24px;\n    border: 1px solid var(--pro-silver-light);\n  }\n\n  \/* ── PROTOCOL ── *\/\n  .zpro6__protocol {\n    background: var(--pro-silver-pale);\n    border-top: 1px solid var(--pro-border);\n    border-bottom: 1px solid var(--pro-border);\n    padding: 52px 28px;\n    text-align: center;\n  }\n  .zpro6__protocol h2 {\n    font-family: 'Raleway', sans-serif;\n    font-size: clamp(18px, 3vw, 26px);\n    font-weight: 800;\n    color: var(--pro-charcoal);\n    margin: 0 0 8px;\n  }\n  .zpro6__protocol-sub { font-size: 13px; color: var(--pro-silver-dark); margin: 0 0 36px; }\n  .zpro6__steps {\n    display: flex;\n    flex-wrap: wrap;\n    justify-content: center;\n    max-width: 860px;\n    margin: 0 auto;\n  }\n  .zpro6__step {\n    flex: 0 0 155px;\n    display: flex;\n    flex-direction: column;\n    align-items: center;\n    gap: 12px;\n    position: relative;\n    padding: 0 8px;\n  }\n  .zpro6__bubble {\n    width: 52px; height: 52px;\n    background: var(--pro-white);\n    border: 2px solid var(--pro-silver-dark);\n    border-radius: 50%;\n    display: flex;\n    align-items: center;\n    justify-content: center;\n    font-family: 'Raleway', sans-serif;\n    font-size: 18px;\n    font-weight: 800;\n    color: var(--pro-charcoal);\n    position: relative;\n    z-index: 1;\n  }\n  .zpro6__step-line {\n    position: absolute;\n    top: 25px;\n    left: calc(50% + 26px);\n    right: calc(-50% + 26px);\n    height: 2px;\n    background: var(--pro-silver-light);\n    z-index: 0;\n  }\n  .zpro6__step:last-child .zpro6__step-line { display: none; }\n  .zpro6__step-title {\n    font-size: 12px;\n    font-weight: 700;\n    letter-spacing: .08em;\n    text-transform: uppercase;\n    color: var(--pro-charcoal-soft);\n    text-align: center;\n  }\n  .zpro6__step-desc { font-size: 12px; color: var(--pro-ink-soft); text-align: center; line-height: 1.5; }\n  .zpro6__step--spf .zpro6__bubble { border-color: #c8960a; background: #fdf8e8; color: #8a6200; }\n  .zpro6__step--spf .zpro6__step-title { color: #8a6200; }\n  .zpro6__step--pm .zpro6__bubble { border-color: var(--pro-charcoal); background: var(--pro-charcoal); color: var(--pro-white); font-size: 14px; }\n\n  \/* ── SPECS ── *\/\n  .zpro6__specs-wrap { background: var(--pro-white); padding: 40px 20px; }\n  .zpro6__specs-wrap h3 {\n    font-family: 'Raleway', sans-serif;\n    font-size: 16px;\n    font-weight: 800;\n    letter-spacing: .12em;\n    text-transform: uppercase;\n    color: var(--pro-charcoal);\n    text-align: center;\n    margin: 0 0 20px;\n  }\n  .zpro6__specs-table {\n    width: 100%;\n    max-width: 700px;\n    margin: 0 auto;\n    border-collapse: collapse;\n    font-size: 13px;\n  }\n  .zpro6__specs-table tr:nth-child(even) { background: var(--pro-silver-pale); }\n  .zpro6__specs-table td {\n    padding: 10px 14px;\n    vertical-align: top;\n    color: var(--pro-ink-soft);\n    border-bottom: 1px solid var(--pro-border);\n  }\n  .zpro6__specs-table td:first-child {\n    font-weight: 700;\n    color: var(--pro-charcoal);\n    white-space: nowrap;\n    width: 38%;\n  }\n\n  \/* ── FAQ ── *\/\n  .zpro6__faq-outer { background: var(--pro-hero-bg2); padding: 48px 28px; }\n  .zpro6__faq { max-width: 760px; margin: 0 auto; }\n  .zpro6__faq h2 {\n    font-family: 'Raleway', sans-serif;\n    font-size: clamp(18px, 3vw, 24px);\n    font-weight: 800;\n    color: var(--pro-charcoal);\n    margin: 0 0 28px;\n    text-align: center;\n  }\n  .zpro6__faq-item { border-bottom: 1px solid var(--pro-border); padding: 18px 0; }\n  .zpro6__faq-q { font-weight: 700; color: var(--pro-charcoal); font-size: 14px; margin-bottom: 8px; }\n  .zpro6__faq-a { font-size: 13px; color: var(--pro-ink-soft); line-height: 1.65; }\n\n  \/* ── WHO ── *\/\n  .zpro6__who {\n    background: var(--pro-hero-bg);\n    border-top: 2px solid var(--pro-silver-light);\n    padding: 52px 28px;\n    text-align: center;\n  }\n  .zpro6__who h2 {\n    font-family: 'Raleway', sans-serif;\n    font-size: clamp(18px, 3vw, 26px);\n    font-weight: 800;\n    color: var(--pro-charcoal);\n    margin: 0 0 28px;\n  }\n  .zpro6__who-grid {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 14px;\n    justify-content: center;\n    max-width: 720px;\n    margin: 0 auto 28px;\n  }\n  .zpro6__who-card {\n    background: var(--pro-white);\n    border-left: 3px solid var(--pro-silver-dark);\n    border-radius: 6px;\n    padding: 14px 20px;\n    text-align: left;\n    flex: 1 1 200px;\n  }\n  .zpro6__who-title {\n    font-size: 12px;\n    font-weight: 800;\n    letter-spacing: .1em;\n    text-transform: uppercase;\n    color: var(--pro-silver-dark);\n    margin-bottom: 5px;\n  }\n  .zpro6__who-desc { font-size: 13px; color: var(--pro-ink-soft); line-height: 1.5; }\n\n  \/* ── DISCLAIMER ── *\/\n  .zpro6__disclaimer {\n    background: var(--pro-silver-pale);\n    border-top: 1px solid var(--pro-border);\n    padding: 24px 28px;\n    font-size: 11px;\n    color: var(--pro-silver-dark);\n    text-align: center;\n    line-height: 1.7;\n  }\n  .zpro6__disclaimer strong { color: var(--pro-charcoal-soft); }\n\n  \/* ── MOBILE ── *\/\n  @media (max-width: 600px) {\n    .zpro6__stat { border-right: none; border-bottom: 1px solid var(--pro-border); padding: 10px 16px; flex: 1 1 40%; }\n    .zpro6__stat:last-child { border-bottom: none; }\n    .zpro6__feature { padding: 36px 18px; }\n    .zpro6__steps { flex-direction: column; align-items: center; }\n    .zpro6__step { flex: none; width: 100%; max-width: 240px; }\n    .zpro6__step-line { display: none; }\n    .zpro6__who-card { flex: 1 1 100%; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"zpro6__wrap\"\u003e\n\n  \u003c!-- HERO --\u003e\n\n  \u003cdiv class=\"zpro6__hero\"\u003e\n    \u003cdiv class=\"zpro6__eyebrow\"\u003eLira Clinical · PRO Line · Retinol + Vitamin C Serum\u003c\/div\u003e\n    \u003ch1\u003ePRO C4 Retinol Serum\u003c\/h1\u003e\n    \u003cp class=\"zpro6__hero-sub\"\u003e1% Retinol paired with 4 forms of Vitamin C and 4 plant stem cells. Rejuvenates skin, reduces fine lines, wrinkles, and acne — a top-recommended starter retinol.\u003c\/p\u003e\n    \u003cdiv class=\"zpro6__badge-row\"\u003e\n      \u003cspan class=\"zpro6__badge\"\u003e1% Retinol\u003c\/span\u003e\n      \u003cspan class=\"zpro6__badge\"\u003e4 Forms Vitamin C\u003c\/span\u003e\n      \u003cspan class=\"zpro6__badge\"\u003e4 Plant Stem Cells\u003c\/span\u003e\n      \u003cspan class=\"zpro6__badge zpro6__badge--pm\"\u003e🌙 PM Primary Use\u003c\/span\u003e\n      \u003cspan class=\"zpro6__badge zpro6__badge--spf\"\u003e☀️ Daily SPF Required\u003c\/span\u003e\n      \u003cspan class=\"zpro6__badge zpro6__badge--preg\"\u003e⚠️ Not for Pregnancy\u003c\/span\u003e\n      \u003cspan class=\"zpro6__badge\"\u003e1.69 fl oz\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"zpro6__trust-icons\"\u003e\n      \u003cdiv class=\"zpro6__trust-icon\"\u003e\n        \u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003cpath d=\"M12 2L3 7l9 5 9-5-9-5z\"\u003e\u003c\/path\u003e\u003cpath d=\"M3 17l9 5 9-5\"\u003e\u003c\/path\u003e\u003cpath d=\"M3 12l9 5 9-5\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n        Made in USA\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__trust-icon\"\u003e\n        \u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003cpath d=\"M20.84 4.61a5.5 5.5 0 0 0-7.78 0L12 5.67l-1.06-1.06a5.5 5.5 0 0 0-7.78 7.78l1.06 1.06L12 21.23l7.78-7.78 1.06-1.06a5.5 5.5 0 0 0 0-7.78z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n        Cruelty-Free\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__trust-icon\"\u003e\n        \u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 8v4l3 3\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n        Eco-Friendly Packaging\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__trust-icon\"\u003e\n        \u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003cpolygon points=\"12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2\"\u003e\u003c\/polygon\u003e\u003c\/svg\u003e\n        5.0★ · 40 Reviews\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- PREGNANCY WARNING BANNER --\u003e\n\n  \u003cdiv class=\"zpro6__retinol-banner\"\u003e\n    \u003cstrong\u003e⚠️ Pregnancy Caution — Not Recommended During Pregnancy\u003c\/strong\u003e\n    \u003cp\u003ePRO C4 Retinol Serum contains 1% Retinol. Retinol and retinoids are not recommended during pregnancy or while breastfeeding. Consult your physician before use if you are pregnant or planning to become pregnant.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SPF BANNER --\u003e\n\n  \u003cdiv class=\"zpro6__spf-banner\"\u003e\n    \u003cstrong\u003e☀️ Retinol Photosensitivity Notice — Daily SPF Required\u003c\/strong\u003e\n    \u003cp\u003eRetinol increases skin photosensitivity. Always apply a broad-spectrum SPF 30+ sunscreen every morning while using this product, even if applying the serum at night only.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- STAT BAR --\u003e\n\n  \u003cdiv class=\"zpro6__stats\"\u003e\n    \u003cdiv class=\"zpro6__stat\"\u003e\n\u003cspan class=\"zpro6__stat-num\"\u003e1%\u003c\/span\u003e\u003cspan class=\"zpro6__stat-label\"\u003eRetinol\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"zpro6__stat\"\u003e\n\u003cspan class=\"zpro6__stat-num\"\u003e4\u003c\/span\u003e\u003cspan class=\"zpro6__stat-label\"\u003eForms Vitamin C\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"zpro6__stat\"\u003e\n\u003cspan class=\"zpro6__stat-num\"\u003e4\u003c\/span\u003e\u003cspan class=\"zpro6__stat-label\"\u003ePlant Stem Cells\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"zpro6__stat\"\u003e\n\u003cspan class=\"zpro6__stat-num\"\u003e5.0★\u003c\/span\u003e\u003cspan class=\"zpro6__stat-label\"\u003e40 Reviews\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"zpro6__stat\"\u003e\n\u003cspan class=\"zpro6__stat-num\"\u003ePM\u003c\/span\u003e\u003cspan class=\"zpro6__stat-label\"\u003eEvening Treatment\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ABOUT --\u003e\n\n  \u003cdiv class=\"zpro6__about\"\u003e\n    \u003cdiv class=\"zpro6__section-eyebrow\"\u003eThe Serum\u003c\/div\u003e\n    \u003ch2\u003eRetinol Meets Quadruple Vitamin C. Gentle Enough to Start.\u003c\/h2\u003e\n    \u003cp\u003eRejuvenate skin with Vitamin C and Retinol serum. Contains 4 forms of Vitamin C, reduces fine lines, wrinkles, and acne. Key ingredients include Retinol, Vitamin C, Swiss Apple, Alpine Rose, Sea Fennel, Licorice Extract, and Olive Leaf Extract.\u003c\/p\u003e\n    \u003cdiv class=\"zpro6__pill-row\"\u003e\n      \u003cdiv class=\"zpro6__pill\"\u003ePeptide Tech\u003c\/div\u003e\n      \u003cdiv class=\"zpro6__pill\"\u003eVitamin C\u003c\/div\u003e\n      \u003cdiv class=\"zpro6__pill\"\u003e1% Retinol\u003c\/div\u003e\n      \u003cdiv class=\"zpro6__pill\"\u003ePlant Stem Cells\u003c\/div\u003e\n      \u003cdiv class=\"zpro6__pill\"\u003eHyaluronic Acid\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- TRUST BAR --\u003e\n\n  \u003cdiv class=\"zpro6__trustbar\"\u003e\n    \u003cdiv class=\"zpro6__tb-item\"\u003e\n\u003cspan class=\"zpro6__tb-dot\"\u003e\u003c\/span\u003eProfessional-Grade Formula\u003c\/div\u003e\n    \u003cdiv class=\"zpro6__tb-item\"\u003e\n\u003cspan class=\"zpro6__tb-dot\"\u003e\u003c\/span\u003eRetinol Starter-Friendly\u003c\/div\u003e\n    \u003cdiv class=\"zpro6__tb-item\"\u003e\n\u003cspan class=\"zpro6__tb-dot\"\u003e\u003c\/span\u003eNot for Eye Area\u003c\/div\u003e\n    \u003cdiv class=\"zpro6__tb-item\"\u003e\n\u003cspan class=\"zpro6__tb-dot\"\u003e\u003c\/span\u003eEsthetician Recommended\u003c\/div\u003e\n    \u003cdiv class=\"zpro6__tb-item\"\u003e\n\u003cspan class=\"zpro6__tb-dot\"\u003e\u003c\/span\u003eFragrance Notice — Patch Test First\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FRAGRANCE NOTICE --\u003e\n\n  \u003cdiv class=\"zpro6__frag-banner\"\u003e\n    \u003cdiv class=\"zpro6__frag-icon\"\u003e🌿\u003c\/div\u003e\n    \u003cp\u003e\u003cstrong\u003eFragrance Notice:\u003c\/strong\u003e PRO C4 Retinol Serum contains Citrus Aurantium Dulcis (Orange) Peel Oil. Those with fragrance sensitivity or reactive skin should perform a patch test before first use. Apply a small amount to the inner arm and wait 24 hours.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FEATURE 1: Retinol + Vitamin C --\u003e\n\n  \u003cdiv style=\"background:#ffffff;\"\u003e\n    \u003cdiv class=\"zpro6__feature\"\u003e\n      \u003cdiv class=\"zpro6__feat-text\"\u003e\n        \u003cdiv class=\"zpro6__section-eyebrow\"\u003eScience Ingredients\u003c\/div\u003e\n        \u003ch3\u003e1% Retinol + Quadruple Vitamin C Complex\u003c\/h3\u003e\n        \u003cp\u003eA gentle yet effective 1% retinol concentration makes this serum an ideal entry point for retinol newcomers and sensitive skin, while four distinct Vitamin C forms deliver layered antioxidant and brightening activity across multiple skin depths.\u003c\/p\u003e\n        \u003cul\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003e1% Retinol — keratolytic agent; skin rejuvenation and renewal\u003c\/span\u003e\n\u003c\/li\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003eTetrahexyldecyl Ascorbate (BV-OSC) — lipid-soluble Vitamin C; collagen synthesis; brightening\u003c\/span\u003e\n\u003c\/li\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003eAscorbyl Palmitate — fat-soluble Vitamin C; antioxidant, anti-inflammatory\u003c\/span\u003e\n\u003c\/li\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003eAscorbic Acid — pure Vitamin C; potent antioxidant and keratolytic\u003c\/span\u003e\n\u003c\/li\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003eCitric Acid — natural AHA; brightening and pH optimization\u003c\/span\u003e\n\u003c\/li\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003eHyaluronic Acid (Sodium Hyaluronate Crosspolymer) — natural humectant; deep hydration\u003c\/span\u003e\n\u003c\/li\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003eUbiquinone (CoQ10) — powerful antioxidant; supports cellular energy and skin repair\u003c\/span\u003e\n\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__feat-visual\"\u003e\n        \u003cdiv class=\"zpro6__card\"\u003e\n          \u003cdiv class=\"zpro6__card-title\"\u003eRetinol + C4 Profile\u003c\/div\u003e\n          \u003cdiv class=\"zpro6__ing\"\u003e\n\u003cspan class=\"zpro6__ing-name\"\u003e1% Retinol\u003c\/span\u003e\u003cspan class=\"zpro6__ing-desc\"\u003eKeratolytic · Skin rejuvenation\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"zpro6__ing\"\u003e\n\u003cspan class=\"zpro6__ing-name\"\u003eTetrahexyldecyl Ascorbate\u003c\/span\u003e\u003cspan class=\"zpro6__ing-desc\"\u003eLipid-soluble Vit C · Collagen synthesis\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"zpro6__ing\"\u003e\n\u003cspan class=\"zpro6__ing-name\"\u003eAscorbyl Palmitate\u003c\/span\u003e\u003cspan class=\"zpro6__ing-desc\"\u003eFat-soluble Vit C · Antioxidant\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"zpro6__ing\"\u003e\n\u003cspan class=\"zpro6__ing-name\"\u003eAscorbic Acid\u003c\/span\u003e\u003cspan class=\"zpro6__ing-desc\"\u003ePure Vit C · Keratolytic\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"zpro6__ing\"\u003e\n\u003cspan class=\"zpro6__ing-name\"\u003eCitric Acid\u003c\/span\u003e\u003cspan class=\"zpro6__ing-desc\"\u003eNatural AHA · Brightening\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"zpro6__ing\"\u003e\n\u003cspan class=\"zpro6__ing-name\"\u003eHyaluronic Acid\u003c\/span\u003e\u003cspan class=\"zpro6__ing-desc\"\u003eHumectant · Deep hydration\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"zpro6__ing\"\u003e\n\u003cspan class=\"zpro6__ing-name\"\u003eUbiquinone (CoQ10)\u003c\/span\u003e\u003cspan class=\"zpro6__ing-desc\"\u003eAntioxidant · Cellular repair\u003c\/span\u003e\n\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FEATURE 2: Plant Stem Cells + Botanicals --\u003e\n\n  \u003cdiv style=\"background: var(--pro-section-alt, #eef0f3);\"\u003e\n    \u003cdiv class=\"zpro6__feature zpro6__feature--rev\"\u003e\n      \u003cdiv class=\"zpro6__feat-text\"\u003e\n        \u003cdiv class=\"zpro6__section-eyebrow\"\u003eNature Ingredients\u003c\/div\u003e\n        \u003ch3\u003e4 Plant Stem Cells \u0026amp; Brightening Botanicals\u003c\/h3\u003e\n        \u003cp\u003eA rare quartet of plant stem cells — Swiss Apple, Sea Fennel, Alpine Rose, and Edelweiss — provide multi-dimensional cellular repair, brightening, climate adaptation, and fibroblast stimulation, supported by anti-inflammatory botanical extracts.\u003c\/p\u003e\n        \u003cul\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003eSwiss Apple Plant Stem Cells — repairs and restores traumatized skin\u003c\/span\u003e\n\u003c\/li\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003eSea Fennel Plant Stem Cells (Crithmum Maritimum) — organic brightener\u003c\/span\u003e\n\u003c\/li\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003eAlpine Rose Plant Stem Cells (Rhododendron Ferrugineum) — adapts skin to harsh climates\u003c\/span\u003e\n\u003c\/li\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003eEdelweiss Plant Stem Cells (Leontopodium Alpinum) — stimulates healthy fibroblast activity\u003c\/span\u003e\n\u003c\/li\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003eLicorice Extract (Dipotassium Glycyrrhizate) — anti-inflammatory, antioxidant, brightening\u003c\/span\u003e\n\u003c\/li\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003eOlive Leaf Extract — anti-inflammatory; strengthens skin immunity; encourages hydration\u003c\/span\u003e\n\u003c\/li\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003eBeet Root Extract (Beta Vulgaris) — anti-inflammatory, soothing\u003c\/span\u003e\n\u003c\/li\u003e\n          \u003cli\u003e\n\u003cspan class=\"zpro6__li-icon\"\u003e✓\u003c\/span\u003e\u003cspan\u003eGreen Tea Extract (Camellia Sinensis) — powerful antioxidant; inhibits melanosome transfer\u003c\/span\u003e\n\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__feat-visual\"\u003e\n        \u003cdiv class=\"zpro6__card zpro6__card--white\"\u003e\n          \u003cdiv class=\"zpro6__card-title\"\u003ePlant Stem Cell Profile\u003c\/div\u003e\n          \u003cdiv class=\"zpro6__ing\"\u003e\n\u003cspan class=\"zpro6__ing-name\"\u003eSwiss Apple Stem Cells\u003c\/span\u003e\u003cspan class=\"zpro6__ing-desc\"\u003eRepairs \u0026amp; restores traumatized skin\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"zpro6__ing\"\u003e\n\u003cspan class=\"zpro6__ing-name\"\u003eSea Fennel Stem Cells\u003c\/span\u003e\u003cspan class=\"zpro6__ing-desc\"\u003eOrganic brightener\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"zpro6__ing\"\u003e\n\u003cspan class=\"zpro6__ing-name\"\u003eAlpine Rose Stem Cells\u003c\/span\u003e\u003cspan class=\"zpro6__ing-desc\"\u003eClimate adaptation · Resilience\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"zpro6__ing\"\u003e\n\u003cspan class=\"zpro6__ing-name\"\u003eEdelweiss Stem Cells\u003c\/span\u003e\u003cspan class=\"zpro6__ing-desc\"\u003eFibroblast stimulation\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"zpro6__ing\"\u003e\n\u003cspan class=\"zpro6__ing-name\"\u003eLicorice Extract\u003c\/span\u003e\u003cspan class=\"zpro6__ing-desc\"\u003eAnti-inflammatory · Brightening\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"zpro6__ing\"\u003e\n\u003cspan class=\"zpro6__ing-name\"\u003eGreen Tea Extract\u003c\/span\u003e\u003cspan class=\"zpro6__ing-desc\"\u003eAntioxidant · Melanosome inhibitor\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"zpro6__ing\"\u003e\n\u003cspan class=\"zpro6__ing-name\"\u003eOlive Leaf Extract\u003c\/span\u003e\u003cspan class=\"zpro6__ing-desc\"\u003eSkin immunity · Hydration\u003c\/span\u003e\n\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- RESULTS STRIP --\u003e\n\n  \u003cdiv class=\"zpro6__results\"\u003e\n    \u003ch3\u003eVisible Results\u003c\/h3\u003e\n    \u003cdiv class=\"zpro6__chips\"\u003e\n      \u003cdiv class=\"zpro6__chip\"\u003eReduced Fine Lines\u003c\/div\u003e\n      \u003cdiv class=\"zpro6__chip\"\u003eDiminished Wrinkles\u003c\/div\u003e\n      \u003cdiv class=\"zpro6__chip\"\u003eClearer Acne\u003c\/div\u003e\n      \u003cdiv class=\"zpro6__chip\"\u003eBrighter Skin Tone\u003c\/div\u003e\n      \u003cdiv class=\"zpro6__chip\"\u003eSmoother Texture\u003c\/div\u003e\n      \u003cdiv class=\"zpro6__chip\"\u003eImproved Radiance\u003c\/div\u003e\n      \u003cdiv class=\"zpro6__chip\"\u003eCellular Renewal\u003c\/div\u003e\n      \u003cdiv class=\"zpro6__chip\"\u003eAntioxidant Defense\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- PROTOCOL --\u003e\n\n  \u003cdiv class=\"zpro6__protocol\"\u003e\n    \u003ch2\u003eHow to Use PRO C4 Retinol Serum\u003c\/h2\u003e\n    \u003cp class=\"zpro6__protocol-sub\"\u003eEvening primary · 1–2 pumps · Follow with crème or oil · Not for eye area\u003c\/p\u003e\n    \u003cdiv class=\"zpro6__steps\"\u003e\n      \u003cdiv class=\"zpro6__step\"\u003e\n        \u003cdiv class=\"zpro6__bubble\"\u003e1\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__step-line\"\u003e\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__step-title\"\u003eCleanse\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__step-desc\"\u003eApply to freshly cleansed skin in the evening\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__step\"\u003e\n        \u003cdiv class=\"zpro6__bubble\"\u003e2\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__step-line\"\u003e\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__step-title\"\u003eApply Serum\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__step-desc\"\u003e1–2 pumps pressed gently into skin. Avoid the eye area.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__step\"\u003e\n        \u003cdiv class=\"zpro6__bubble\"\u003e3\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__step-line\"\u003e\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__step-title\"\u003eMoisturize\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__step-desc\"\u003eFollow with a Lira Clinical crème or oil to seal and hydrate\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__step zpro6__step--pm\"\u003e\n        \u003cdiv class=\"zpro6__bubble\"\u003e2×\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__step-line\"\u003e\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__step-title\"\u003eFrequency\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__step-desc\"\u003eUp to twice daily depending on skin condition severity\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__step zpro6__step--spf\"\u003e\n        \u003cdiv class=\"zpro6__bubble\"\u003e☀️\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__step-title\"\u003eMorning SPF\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__step-desc\"\u003eBroad-spectrum SPF 30+ every morning — essential with retinol use\u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SPECS TABLE --\u003e\n\n  \u003cdiv class=\"zpro6__specs-wrap\"\u003e\n    \u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n    \u003ctable class=\"zpro6__specs-table\"\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eLira Clinical\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eLine\u003c\/td\u003e\n\u003ctd\u003ePRO Line — Anti-Aging \u0026amp; Treatment\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eRetinol + Vitamin C Serum\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e1.69 fl oz · Pump Bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eUsage Time\u003c\/td\u003e\n\u003ctd\u003ePM primary · Up to twice daily depending on severity\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003e1–2 pumps pressed into cleansed skin. Follow with crème or oil. Not for eye area.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eKey Actives\u003c\/td\u003e\n\u003ctd\u003e1% Retinol, 4-Form Vitamin C (BV-OSC, Ascorbyl Palmitate, Ascorbic Acid, Citric Acid), Swiss Apple \/ Sea Fennel \/ Alpine Rose \/ Edelweiss Plant Stem Cells, Hyaluronic Acid, Licorice Extract, Olive Leaf Extract\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSkin Concerns\u003c\/td\u003e\n\u003ctd\u003eFine Lines, Wrinkles, Acne, Uneven Tone, Dullness, Hyperpigmentation, Texture\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eInnovative Tech\u003c\/td\u003e\n\u003ctd\u003ePeptide Tech · Vitamin C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePregnancy\u003c\/td\u003e\n\u003ctd\u003eNot recommended during pregnancy or breastfeeding — contains Retinol. Consult physician.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eEye Area\u003c\/td\u003e\n\u003ctd\u003eNot to be used on the eye area\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFragrance Note\u003c\/td\u003e\n\u003ctd\u003eContains Citrus Aurantium Dulcis (Orange) Peel Oil — patch test recommended for sensitive skin\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSPF Requirement\u003c\/td\u003e\n\u003ctd\u003eBroad-spectrum SPF 30+ required daily — retinol increases photosensitivity\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eMade in USA\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCruelty-Free · Eco-Friendly Packaging\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFull Ingredients\u003c\/td\u003e\n\u003ctd style=\"overflow-wrap:anywhere; word-break:break-word;\"\u003eWater (Aqua), Tetrahexyldecyl Ascorbate, Glycerin, Dimethicone, Cetearyl Olivate, Sorbitan Olivate, Sodium Hyaluronate Crosspolymer, Cetyl Palmitate, Sorbitan Palmitate, Malus Domestica Fruit Cell Culture, Lecithin, Imperata Cylindrica Root Extract, Phenoxyethanol, Caprylyl Glycol, Ethylhexylglycerin, Hexylene Glycol, Butylene Glycol, Yeast Polysaccharides, PPG-12\/SMDI Copolymer, Cetearyl Alcohol, Retinol, Polysorbate 20, Camellia Sinensis Leaf Extract, Beta Vulgaris (Beet) Root Extract, Haberlea Rhodopensis Leaf Extract, Yeast Extract, Tocopherol, Ascorbyl Palmitate, Ascorbic Acid, Citric Acid, Xanthan Gum, Dipotassium Glycyrrhizate, Tocopheryl Acetate, Crithmum Maritimum Callus Culture Filtrate, Leontopodium Alpinum Meristem Cell Culture, Rhododendron Ferrugineum Leaf Cell Culture Extract, Isomalt, Lactic Acid, Disodium EDTA, Aloe Barbadensis Leaf Juice Powder, Ubiquinone, Olea Europaea (Olive) Leaf Extract, Citrus Aurantium Dulcis (Orange) Peel Oil.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FAQ --\u003e\n\n  \u003cdiv class=\"zpro6__faq-outer\"\u003e\n    \u003cdiv class=\"zpro6__faq\"\u003e\n      \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n      \u003cdiv class=\"zpro6__faq-item\"\u003e\n        \u003cdiv class=\"zpro6__faq-q\"\u003eHow do I use PRO C4 Retinol Serum?\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__faq-a\"\u003eApply 1–2 pumps to cleansed skin in the evening. Follow with a Lira Clinical crème or oil. Can be used up to twice daily depending on skin condition severity. Not to be used on the eye area.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__faq-item\"\u003e\n        \u003cdiv class=\"zpro6__faq-q\"\u003eIs PRO C4 Retinol Serum suitable for retinol beginners?\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__faq-a\"\u003eYes. At 1% retinol, PRO C4 Retinol Serum is an excellent entry point for first-time retinol users or those who have experienced irritation with higher-concentration formulas. Estheticians frequently recommend it as a starter retinol. Begin with evening use a few times per week and increase frequency as tolerated.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__faq-item\"\u003e\n        \u003cdiv class=\"zpro6__faq-q\"\u003eWhat are the 4 forms of Vitamin C in PRO C4 Retinol Serum?\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__faq-a\"\u003ePRO C4 Retinol Serum contains four distinct Vitamin C derivatives: Tetrahexyldecyl Ascorbate (BV-OSC), Ascorbyl Palmitate, Ascorbic Acid, and Citric Acid — delivering keratolytic, antioxidant, and anti-inflammatory benefits across multiple delivery pathways.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__faq-item\"\u003e\n        \u003cdiv class=\"zpro6__faq-q\"\u003eIs PRO C4 Retinol Serum safe during pregnancy?\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__faq-a\"\u003ePRO C4 Retinol Serum contains 1% Retinol. Retinol and retinoids are not recommended during pregnancy. Consult your physician before use if you are pregnant, planning to become pregnant, or breastfeeding.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__faq-item\"\u003e\n        \u003cdiv class=\"zpro6__faq-q\"\u003eDoes PRO C4 Retinol Serum require daily SPF?\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__faq-a\"\u003eYes. Retinol increases skin photosensitivity. Always apply a broad-spectrum SPF 30+ sunscreen every morning while using PRO C4 Retinol Serum, even if you apply the serum at night only.\u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- WHO IS THIS FOR --\u003e\n\n  \u003cdiv class=\"zpro6__who\"\u003e\n    \u003cdiv class=\"zpro6__section-eyebrow\" style=\"margin-bottom:10px;\"\u003eWho Should Use This\u003c\/div\u003e\n    \u003ch2\u003eIs PRO C4 Retinol Serum Right for You?\u003c\/h2\u003e\n    \u003cdiv class=\"zpro6__who-grid\"\u003e\n      \u003cdiv class=\"zpro6__who-card\"\u003e\n        \u003cdiv class=\"zpro6__who-title\"\u003eRetinol Beginners\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__who-desc\"\u003eFirst-time retinol users or those with past sensitivity — 1% concentration is the ideal gentle starting point\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__who-card\"\u003e\n        \u003cdiv class=\"zpro6__who-title\"\u003eAnti-Aging Focus\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__who-desc\"\u003eFine lines, wrinkles, and loss of firmness addressed through retinol-driven cellular renewal and Vitamin C collagen support\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__who-card\"\u003e\n        \u003cdiv class=\"zpro6__who-title\"\u003eAcne-Prone Skin\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__who-desc\"\u003eRetinol's keratolytic action clears congestion while Vitamin C and botanicals address post-acne marks and texture\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"zpro6__who-card\"\u003e\n        \u003cdiv class=\"zpro6__who-title\"\u003eBrightening \u0026amp; Tone\u003c\/div\u003e\n        \u003cdiv class=\"zpro6__who-desc\"\u003eQuadruple Vitamin C and Sea Fennel stem cells work together to brighten and even complexion over time\u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cp style=\"font-size:12px; color: var(--pro-silver-dark); max-width:520px; margin:0 auto;\"\u003eNot recommended during pregnancy or breastfeeding. Not for use on the eye area. Always apply SPF 30+ in the morning. Patch test if fragrance-sensitive.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- DISCLAIMER --\u003e\n\n  \u003cdiv class=\"zpro6__disclaimer\"\u003e\n    \u003cstrong\u003eImportant Notices:\u003c\/strong\u003e PRO C4 Retinol Serum contains 1% Retinol — not recommended during pregnancy or breastfeeding. Consult your physician before use if pregnant or planning to become pregnant. Retinol increases photosensitivity — always apply a broad-spectrum SPF 30+ sunscreen every morning while using this product. Contains Citrus Aurantium Dulcis (Orange) Peel Oil; those with fragrance sensitivity should patch test before use. Not to be used on the eye area. For external use only. Discontinue if irritation occurs. Keep out of reach of children. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Auréa Beauty is an authorized retailer of Lira Clinical products.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Lira Clinical","offers":[{"title":"Default Title","offer_id":47528706932893,"sku":null,"price":69.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0742\/5841\/5773\/files\/PROC4RetinolSerum.webp?v=1767477156","url":"https:\/\/myaurea.beauty\/products\/pro-c4-retinol-serum","provider":"Auréa Beauty","version":"1.0","type":"link"}