What is SolaStay (Ethylhexyl Methoxycrylene)?

SolaStay is an award-winning photostabilizer specifically designed as a singlet state quencher for Avobenzone and Octinoxate. It prevents these UV filters from degrading in sunlight, maintaining broad-spectrum protection throughout the day and reducing sensitivity issues often associated with UV absorbers.

What is Lipochroman-6 (Dimethylmethoxy Chromanol)?

Lipochroman-6 is a potent scavenger of reactive oxygen species (ROS) and reactive nitrogen species (RNS) that protects skin cells from damage and premature aging caused by UV-induced oxidative stress. It protects cellular machinery from degradation.

What is Preventhilia (Diaminopropionoyl Tripeptide-33)?

Preventhilia is a tetrapeptide that prevents the damage caused directly or indirectly by UV radiation to DNA and proteins, helping to prevent photoaging at the molecular level.

Does Circadia Light Day Sunscreen leave a white cast?

No — this is a chemical sunscreen (Avobenzone, Octinoxate, Octocrylene) that absorbs completely clear and leaves no white cast or ashy residue on any skin tone.

How do I use Circadia Light Day Sunscreen SPF 37?

Apply liberally to face, neck, and ears 15 minutes before sun exposure. Reapply at least every 2 hours, or more frequently after perspiring, swimming, or toweling. Reducing the quantity applied will significantly lower the level of protection.

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Circadia Light Day Sunscreen Broad Spectrum SPF 37

Product label: % Sale

Circadia Light Day Sunscreen Broad Spectrum SPF 37

Name: Circadia Light Day Sunscreen Broad Spectrum SPF 37
Brand: Circadia
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Circadia Light Day Sunscreen Broad Spectrum SPF 37

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Circadia · Chemical Sunscreen · SPF 37 · Broad Spectrum · Daily Use

Light Day Sunscreen
Broad Spectrum SPF 37

SolaStay® + Lipochroman-6 + Preventhilia — UV protection, DNA defense, and antioxidant support in one lightweight daily SPF.

A lightweight, non-greasy daily sunscreen that protects against UVA/UVB damage while hydrating and soothing the skin. Award-winning photostabilizer keeps UV filters active all day.

SPF 37 Broad SpectrumSolaStay® PhotostabilizerLipochroman-6PreventhiliaNo White CastAll Skin Types

SPF 37Broad Spectrum

3Active UV Filters

4Proprietary Actives

AllSkin Types

Daily Chemical Sunscreen

More Than UV Protection —
DNA Defense and Antioxidant Coverage.

Light Day Sunscreen SPF 37 is Circadia's advanced daily wear sunscreen designed for lifestyle protection — formulated not just to block UV rays, but to defend the skin at every level of light-induced damage. Active ingredients Avobenzone 3%, Octinoxate 7.5%, and Octocrylene 2.8% deliver broad-spectrum UVA and UVB protection, absorbing completely clear with no white cast. SolaStay (Ethylhexyl Methoxycrylene) is an award-winning photostabilizer that acts as a singlet state quencher specifically designed for Avobenzone and Octinoxate — keeping these UV filters active and effective throughout the day while reducing sensitivity issues often associated with UV absorbers. Lipochroman-6 (Dimethylmethoxy Chromanol) scavenges both reactive oxygen species and reactive nitrogen species, protecting skin cells and cellular machinery from UV-induced degradation and premature aging. Preventhilia (Diaminopropionoyl Tripeptide-33) is a tetrapeptide that prevents damage to DNA and proteins caused directly or indirectly by UV radiation — protecting at the molecular level where traditional SPF cannot. PhytoCellTech Solar Vitis (grape stem cell extract) protects against oxidative and UV damage and delays cellular senescence. Citrus extracts, Rosewood, Apricot, Vanilla, and Lime add antioxidant and soothing support.

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3 UV Actives

Avobenzone + Octinoxate + Octocrylene

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SolaStay®

Award-winning photostabilizer — keeps actives working

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Lipochroman-6

ROS + RNS scavenger — cellular protection

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Preventhilia

DNA-protective tetrapeptide — prevents photoaging

Key Actives

The Science Behind the SPF

Active — UVA

Avobenzone 3%

The gold standard broad UVA filter — absorbs the full UVA spectrum. Photostabilized by SolaStay to maintain efficacy throughout the day and prevent degradation in sunlight.

Active — UVB

Octinoxate 7.5%

A highly effective UVB absorber that works synergistically with Avobenzone and Octocrylene for full broad-spectrum coverage. Photostabilized by SolaStay to sustain performance.

Active — UVA/UVB

Octocrylene 2.8%

Provides both UVA and UVB absorption and acts as a stabilizer for Avobenzone, helping to maintain the integrity of the UV filter system throughout sun exposure.

Photostabilizer

SolaStay®

Ethylhexyl Methoxycrylene — award-winning singlet state quencher specifically designed for Avobenzone and Octinoxate. Prevents UV filter degradation and reduces sensitivity issues associated with UV absorbers.

Antioxidant

Lipochroman-6

Dimethylmethoxy Chromanol — scavenges reactive oxygen and reactive nitrogen species. Protects cells from UV-induced damage, premature aging, and cellular machinery degradation.

DNA Protector

Preventhilia

Diaminopropionoyl Tripeptide-33 — a tetrapeptide that prevents UV-induced damage to DNA and proteins, guarding against photoaging at the molecular level beyond what UV filters alone can provide.

Benefits

What It Does

UV Protection

Three photostabilized UV filters deliver broad-spectrum SPF 37 UVA/UVB protection — no white cast, no heaviness.

DNA Defense

Preventhilia protects DNA and proteins from direct and indirect UV damage to prevent photoaging at the molecular level.

Antioxidant

Lipochroman-6 and PhytoCellTech Solar Vitis neutralize free radicals and defend against oxidative aging and cellular damage.

Directions

How to Apply

Apply as the final step in your morning routine. Reducing the quantity applied will significantly lower the level of protection.

1

Apply Liberally

Apply liberally to face, neck, and ears 15 minutes before sun exposure. Apply as the final step in your morning skincare routine before makeup.

2

Reapply Every 2 Hours

Reapply at least every 2 hours during sun exposure. Reapply more frequently after perspiring, swimming, or toweling dry.

3

Sun Safety

Do not stay too long in the sun even while using sunscreen. Keep babies and young children out of direct sunlight. Over-exposure to the sun is a serious health threat.

Drug Facts

Sunscreen Information

Active Ingredients / Purpose

Avobenzone 3% — Sunscreen · Octinoxate 7.5% — Sunscreen · Octocrylene 2.8% — Sunscreen

Uses

Helps prevent sunburn. If used as directed with other sun protection measures (see Directions), decreases the risk of skin cancer and early skin aging caused by the sun.

Warnings

For external use only. When using this product keep out of eyes — rinse with water to remove. Stop use and ask a doctor if rash occurs. Keep out of reach of children. If swallowed, get medical help or contact a Poison Control Center right away. Children under 6 months: ask a doctor.

Sun Protection Measures

Spending time in the sun increases your risk of skin cancer and early skin aging. To decrease this risk, regularly use a broad spectrum SPF 15 or higher sunscreen and: limit time in the sun especially from 10 a.m.–2 p.m.; wear long-sleeved shirts, pants, hats, and sunglasses.

Formulation

Ingredients

Active Ingredients

Avobenzone 3% — Sunscreen (UVA) · Octinoxate 7.5% — Sunscreen (UVB) · Octocrylene 2.8% — Sunscreen (UVA/UVB)

Key Inactive Actives

SolaStay® (Ethylhexyl Methoxycrylene) — award-winning photostabilizer; singlet state quencher for Avobenzone and Octinoxate; reduces UV filter degradation and sensitivity.
Lipochroman-6 (Dimethylmethoxy Chromanol) — scavenger of reactive oxygen and reactive nitrogen species; protects cells from damage and premature aging.
Preventhilia (Diaminopropionoyl Tripeptide-33) — tetrapeptide; prevents UV-induced damage to DNA and proteins; prevents photoaging.
PhytoCellTech Solar Vitis (Vitis Vinifera Fruit Cell Extract) — grape stem cell extract; protects against oxidative and UV damage; delays cell senescence.
Citrus Botanical Complex — Orange, Grapefruit, Lime Peel Extracts; antioxidant and brightening support.
Rosewood (Aniba Rosaeodora) Wood Extract — soothing and antioxidant.
Apricot (Prunus Armeniaca) Fruit Extract — nourishing and softening.

Full Inactive Ingredient List

Aqua/Water, C12-15 Alkyl Benzoate, Glycerin, VP/Eicosene Copolymer, Silica, C9-12 Alkane, Dimethicone, Potassium Cetyl Phosphate, PEG-100 Stearate, Dimethyl Capramide, Hydrogenated Palm Glycerides, Glyceryl Distearate, Glyceryl Stearate, Caprylyl Glycol, Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Phenoxyethanol, Isohexadecane, Polysilicone-11, Coco-Caprylate/Caprate, Isomalt, Xanthan Gum, Hexylene Glycol, Polysorbate 80, Caprylic/Capric Triglyceride, Disodium EDTA, Sorbitan Oleate, Dimethylmethoxy Chromanol, Citrus Aurantium Dulcis Peel Extract, Prunus Armeniaca Fruit Extract, Citrus Grandis Peel Extract, Aniba Rosaeodora Wood Extract, Vitis Vinifera Fruit Cell Extract, Lecithin, Diaminopropionoyl Tripeptide-33, Sodium Benzoate, Vanilla Planifolia Fruit Extract, Citrus Aurantifolia Peel Extract, Limonene, Linalool.

Specifications

Product Details

Brand	Circadia by Dr. Pugliese
SPF	SPF 37 · Broad Spectrum
Active Ingredients	Avobenzone 3% · Octinoxate 7.5% · Octocrylene 2.8%
Sunscreen Type	Chemical (no white cast)
Use	Apply liberally to face, neck, and ears 15 minutes before sun exposure; reapply at least every 2 hours
Skin Types	All Skin Types · Sensitive · Post-Treatment · Aging · Sun-Exposed
Key Technology	SolaStay® · Lipochroman-6 · Preventhilia · PhytoCellTech Solar Vitis

FAQ

Common Questions

Everything you need to know about Light Day Sunscreen Broad Spectrum SPF 37.

What are the active ingredients in this sunscreen?

Avobenzone 3% (UVA), Octinoxate 7.5% (UVB), and Octocrylene 2.8% (UVA/UVB). These three chemical UV filters provide broad-spectrum protection and are photostabilized by SolaStay to maintain their effectiveness throughout the day.

What is SolaStay and why does it matter?

SolaStay (Ethylhexyl Methoxycrylene) is an award-winning photostabilizer that acts as a singlet state quencher for Avobenzone and Octinoxate — the two most common UV filters that degrade in sunlight. SolaStay keeps them active all day, maximizing protection and reducing sensitivity issues often associated with UV absorbers.

What is Lipochroman-6?

Lipochroman-6 (Dimethylmethoxy Chromanol) is a potent antioxidant that scavenges both reactive oxygen species and reactive nitrogen species — protecting skin cells, cellular membranes, and cellular machinery from UV-induced damage and premature aging.

What is Preventhilia?

Preventhilia (Diaminopropionoyl Tripeptide-33) is a tetrapeptide that prevents UV-induced damage to DNA and proteins, guarding against photoaging at the molecular level — providing a layer of protection that standard UV filters cannot.

Does this sunscreen leave a white cast?

No — this is a chemical sunscreen that absorbs completely clear, leaving no white cast or ashy residue on any skin tone. It wears like a lightweight lotion and makes an excellent primer base under makeup.

Is it suitable for sensitive or post-treatment skin?

Yes — SolaStay reduces sensitivity issues associated with UV absorbers, and the formula is lightweight and non-comedogenic, making it well-tolerated by sensitive, reactive, and post-procedure skin types.

How do I apply it?

Apply liberally to face, neck, and ears 15 minutes before sun exposure. Reapply at least every 2 hours during outdoor exposure, or more frequently after perspiring, swimming, or toweling. Reducing the quantity applied will significantly lower the level of protection.

Ideal For

Who Is This For?

All Skin TypesSensitive SkinPost-TreatmentAging SkinSun-ExposedDaily Lifestyle SPFNo White Cast NeededMakeup Wearers

For external use only. Apply liberally 15 minutes before sun exposure. Reapply at least every 2 hours. Keep out of eyes — rinse with water to remove. Stop use and ask a doctor if rash occurs. Keep out of reach of children. Children under 6 months: ask a doctor. If swallowed, get medical help or contact a Poison Control Center right away. Do not stay too long in the sun even while using a sunscreen product. Over-exposure to the sun is a serious health threat. Contains Limonene and Linalool. Circadia products are developed for professional skincare use. Sold exclusively through authorized Circadia retailers. Auréa Beauty (myaurea.beauty) is an authorized Circadia professional skincare retailer.

Payment Protection + Pay Later Options
Easy 30-Day Returns

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Auréa Beauty stands for more than visible results—we stand for responsibility. We believe in derm-developed, cruelty-free, and sustainably sourced formulas.

✔ We're proudly woman-owned: created with heart, honesty, and intention.

✔ Real, medical-grade skincare and haircare you can actually trust—without fluff and false promises.

✔ We make self-care simple, personal, and powerful.

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Questions? We've got you!

Shipping & Returns

We ship within the US only.

1. Economy Shipping costs $11.99 and takes 5–8 business days.

2. Express Shipping costs $24.99 and takes 2–3 business days.

Yes, we accept returns within 30 days. Terms and conditions apply, see them here.

We accept a variety of payment methods including major credit cards (Visa, Mastercard, etc.), plus alternative payment options like Apple Pay, Shop Pay, and PayPal.

Once your order is placed and shipped, you will receive a confirmation email. Use the tracking information provided to follow delivery.

If you're missing tracking or have any concerns, please reach out to our customer support.

Products & Quality

Auréa Beauty is a proudly woman-owned online store offering premium, medical-grade skincare and advanced beauty devices.

All products are guaranteed authentic, dermatologist-recommended, sourced directly from trusted brands like Bio-Therapeutic, Circadia, GlyMed Plus, and TiZO.