COSRX
COSRX Advanced Snail 96 Mucin Power Essence
Low risk75/100
COSRX
Ultra-Light Invisible Sunscreen SPF 50 PA++++
Sunscreens
Some ingredients carry a low-risk flag. Read the formulation context before deciding.
28 of 28 ingredients rated
Is it suitable during pregnancy?
MamaSkin rates the recorded formula for COSRX Ultra-Light Invisible Sunscreen SPF 50 PA++++ as Low risk (79/100). Review the ingredient context and any manual-review explanation before deciding.
Why this rating? Manual-review explanation
Manual review 2026-07-11: The recorded formula was manually reviewed. This formula contains Methyl Trimethicone, classified as low risk for consistency with MamaSkin's silicone policy. This does not indicate a known pregnancy contraindication; see the highlighted ingredient entry for its rationale and sources.
28 of 28 ingredient entries on this page have a recorded score, evidence summary and source text. That describes documentation coverage, not proof that the finished formula has been clinically tested during pregnancy.
How we assess productsIngredient breakdown
The recorded formula, with evidence behind each rating. Unmatched ingredients are marked Not assessed in grey.
Ingredient ratings and evidence
Higher-risk flags first. Open an ingredient for evidence.
Methyl Trimethicone
Low risk
A lightweight volatile linear silicone used as a solvent and texture ingredient. Related linear methicone ingredients have reassuring cosmetic safety assessments, but an exact final Cosmetic Ingredient Review finding for Methyl Trimethicone was not located. MamaSkin classifies it as low risk because exact-ingredient pregnancy and inhalation data are limited, while no specific pregnancy contraindication has been identified for normal topical cosmetic use.
Sources: CIR: Safety Assessment of Dimethicone Methicone and Substituted-Methicone Polymers https://cir-safety.org/supplementaldoc/safety-assessment-dimethicone-methicone-and-substituted-methicone-polymers-used-cosm; CIR Quick Reference Table December 2025
Aloe Barbadensis Leaf Water
No known risks
A botanical extract or plant water used for conditioning, soothing or antioxidant support. Direct pregnancy studies of this exact cosmetic material were not identified, but no reproductive or developmental hazard was identified for normal topical exposure. Oral herbal or medicinal use is outside this classification.
Sources: European Commission CosIng; CIR botanical safety framework and relevant plant-family assessments; no ingredient-specific human pregnancy study of normal topical cosmetic use was identified.
Diethylhexyl Succinate
No known risks
diethylhexyl succinate is a cosmetic formulation, mineral, sugar-derived or organic-acid ingredient. Available identity, use and related safety evidence did not identify a pregnancy-specific concern for normal topical cosmetic exposure. Cosmetic-grade purity and ordinary irritation precautions remain applicable.
Sources: CIR ingredient and related-family safety assessments; CIR Quick Reference Table https://www.cir-safety.org/supplementaldoc/quick-reference-table-december-2025; European Commission CosIng
Propanediol
No known risks
Solvent and humectant used to improve texture and ingredient solubility. Low systemic exposure expected from topical cosmetic use.
Sources: Cosmetic Ingredient Review (US); Scientific Committee on Consumer Safety (EU)
Water
No known risks
Water (Aqua) is the standard purified water used as a cosmetic solvent. It has no pregnancy-specific risk in normal topical use.
Sources: https://pubchem.ncbi.nlm.nih.gov/compound/Water, https://single-market-economy.ec.europa.eu/sectors/cosmetics/cosmetic-ingredient-database/cosing-glossary-ingredients_en
Show all 28 ingredients
Drometrizole Trisiloxane
No known risks
Organic UVA/UVB filter used in sunscreens, also known as Mexoryl XL. Cosmetic safety and regulatory sources support use within applicable concentration limits, with no pregnancy- or breastfeeding-specific topical concern identified in the sources reviewed.
Sources: EU CosIng Annex VI / UV filters; SCCS / European Commission cosmetic UV filter safety assessments; PubMed
Ethylhexyl Triazone
No known risks
UV filter used in sunscreens and day products to help absorb UVB radiation. Reviewed cosmetic safety and regulatory sources support current cosmetic use within applicable concentration limits, with no pregnancy- or breastfeeding-specific topical concern identified in the material reviewed.
Sources: EU CosIng Annex VI / UV filters; EU scientific opinion on Ethylhexyl Triazone (Uvinul T 150)
Niacinamide
No known risks
Niacinamide (vitamin B3) is widely used for barrier support and tone/texture benefits, and is generally considered safe in pregnancy and breastfeeding when used topically at cosmetic concentrations.
Sources: CIR; EU/UK Cosmetics Regulation
Diethylamino Hydroxybenzoyl Hexyl Benzoate
No known risks
Modern UVA filter (often called Uvinul A+ or DHHB). Regulatory assessments have repeatedly evaluated this filter as safe in cosmetic products at concentrations up to 10%. The most recent SCCS advice focuses on controlling a manufacturing impurity (DnHexP) rather than on new toxicity of DHHB itself. Human biomonitoring data indicate low systemic exposure from normal sunscreen use, and current reviews do not identify specific reproductive or developmental toxicity signals at approved concentrations.
Sources: SCCP opinion referenced in Directive 2008/123/EC: concludes that Diethylamino Hydroxybenzoyl Hexyl Benzoate used at a maximum of 10% in cosmetic (including sunscreen) products does not pose a risk to the consumer. Regulatory summaries (e.g. CosLaw and CIRS Group updates, 2025) reviewing the SCCS DHHB opinion and reiterating that DHHB remains permitted up to 10% in EU cosmetics when impurity limits are respected.
Terephthalylidene Dicamphor Sulfonic Acid
No known risks
Organic UVA filter used in sunscreens, also known as Ecamsule or Mexoryl SX. Cosmetic safety and regulatory sources support use within applicable concentration limits, with no pregnancy- or breastfeeding-specific topical concern identified in the sources reviewed.
Sources: EU CosIng Annex VI / UV filters; SCCS / European Commission cosmetic UV filter safety assessments; PubMed
1,2-Hexanediol
No known risks
1,2-Hexanediol is commonly used as a solvent and preservative booster; topical exposure is low and it has no known pregnancy or breastfeeding concerns at cosmetic concentrations, though very sensitive skin may occasionally react.
Sources: CIR; EU/UK Cosmetics Regulation
Behenyl Alcohol
No known risks
Long-chain fatty alcohol used as an emollient and thickener. This is not the same concern profile as simple drying alcohols; reviewed cosmetic safety sources support normal topical use.
Sources: CIR: Final Report on the Safety Assessment of Cetearyl Alcohol, Cetyl Alcohol, Isostearyl Alcohol, Myristyl Alcohol, and Behenyl Alcohol; EU CosIng / cosmetics regulatory inventory
Sodium Polyacryloyldimethyl Taurate
No known risks
A high-molecular-weight polymer used to thicken and stabilise formulas. Cosmetic safety reviewers assessed acryloyldimethyltaurate polymers and concluded that they are safe in current cosmetic practices. Absorption of the finished polymer is expected to be limited, with residual monomers controlled during manufacture.
Sources: CIR: Safety Assessment of Acryloyldimethyltaurate Polymers as Used in Cosmetics https://www.cir-safety.org/panelbook/safety-assessment-acryloyldimethyltaurate-polymers-used-cosmetics-1
Hamamelis Virginiana Leaf Water
No known risks
hamamelis virginiana leaf water is a botanical-derived cosmetic conditioning ingredient. The reviewed identity is not an essential oil or an oral herbal preparation. Available cosmetic evidence and expected topical exposure did not identify a pregnancy-specific contraindication, although botanical irritation or allergy remains possible.
Sources: CIR ingredient-specific and botanical-family safety assessments; CIR Quick Reference Table https://cir-safety.org/sites/default/files/QRT-Update-Dec2025.pdf; European Commission CosIng
Tromethamine
No known risks
pH adjuster and buffer used to stabilise formulations. Reviewed cosmetic safety sources support normal topical use, with no pregnancy- or breastfeeding-specific topical signal identified in the material reviewed.
Sources: CIR: Safety Assessment of Tromethamine as Used in Cosmetics; EU CosIng / cosmetics regulatory inventory
Polyacrylate Crosspolymer-6
No known risks
Large polymer thickener and stabilizer used in gels, serums and creams. Systemic exposure from topical cosmetic use is expected to be low, with no pregnancy- or breastfeeding-specific concern identified in reviewed cosmetic references.
Sources: CIR cosmetic ingredient safety references for acrylates/polyacrylate crosspolymers; EU CosIng / cosmetics regulatory inventory
Arachidyl Alcohol
No known risks
A long-chain fatty alcohol or fatty-alcohol blend used as an emollient, emulsifier or thickener. Cosmetic safety assessments of long-chain fatty alcohols support use in current cosmetic practices; systemic absorption and reproductive exposure from normal topical use are expected to be low.
Sources: CIR: Safety Assessment of Fatty Alcohols as Used in Cosmetics; CIR December 2025 Quick Reference Table https://cir-safety.org/sites/default/files/QRT-Update-Dec2025.pdf
Caprylyl Glycol
No known risks
Humectant and preservative booster used to support product stability. Low systemic exposure expected from topical cosmetic use.
Sources: Scientific Committee on Consumer Safety (EU); Cosmetic Ingredient Review (US)
Ethylhexylglycerin
No known risks
Preservative booster and skin-conditioning agent. Considered safe for cosmetic use with low systemic exposure when used as intended.
Sources: Scientific Committee on Consumer Safety (EU); Cosmetic Ingredient Review (US)
Arachidyl Glucoside
No known risks
This glucose-derived nonionic surfactant or emulsifier is used in cleansers and emulsions. The Cosmetic Ingredient Review concluded that alkyl glucosides are safe in current cosmetic use when formulated to be non-irritating; sensitive skin can still react to surfactants.
Sources: CIR: Safety Assessment of Decyl Glucoside and Other Alkyl Glucosides as Used in Cosmetics https://cir-reports.cir-safety.org/view-attachment/?id=9810a771-8e74-ec11-8943-0022482f06a6
Sodium Metaphosphate
No known risks
A simple inorganic salt used to adjust viscosity, ionic strength, pH or formula stability. At normal cosmetic concentrations, no pregnancy-specific concern was identified from topical exposure. Concentrated raw material may irritate skin or eyes, so this assessment applies to a compliant finished cosmetic rather than occupational handling.
Sources: European Commission CosIng ingredient inventory; ECHA substance information for sodium chloride and marine salts, magnesium nitrate and sodium metaphosphate; CIR assessments of related magnesium and phosphate salts.
Adenosine
No known risks
Skin-conditioning ingredient commonly used in leave-on skincare. Reviewed cosmetic safety sources support normal topical use, with no pregnancy- or breastfeeding-specific topical signal identified in the material reviewed.
Sources: CIR: Safety Assessment of Adenosine Ingredients as Used in Cosmetics; EU CosIng / cosmetics regulatory inventory
Tocopherol
No known risks
Vitamin E antioxidant used to protect oils and support the skin barrier. Not associated with pregnancy-specific concerns at cosmetic exposure.
Sources: Cosmetic Ingredient Review (US); Scientific Committee on Consumer Safety (EU)
Sodium Hyaluronate
No known risks
Sodium hyaluronate (hyaluronic acid salt) is used for hydration and cushioning, with very low systemic absorption from topical use and no known pregnancy or breastfeeding concerns at cosmetic concentrations.
Sources: CIR; EU/UK Cosmetics Regulation
Allantoin
No known risks
Allantoin is a soothing skin protectant commonly used to help reduce irritation and support comfort, with no known pregnancy or breastfeeding concerns in topical cosmetic use.
Sources: CIR; EU/UK Cosmetics Regulation
Citric Acid
No known risks
pH adjuster used in small amounts to maintain product stability. Not associated with pregnancy-specific concerns.
Sources: Scientific Committee on Consumer Safety (EU); European cosmetics regulatory framework
Sodium Benzoate
No known risks
Preservative widely used in foods and cosmetics. Considered safe at regulated concentrations with low systemic exposure from topical use.
Sources: Scientific Committee on Consumer Safety (EU); European cosmetics regulatory framework
Potassium Sorbate
No known risks
Preservative widely used in foods and cosmetics. Considered safe at regulated concentrations with low systemic exposure from topical use.
Sources: Scientific Committee on Consumer Safety (EU); European cosmetics regulatory framework
Full recorded ingredient list
Aloe Barbadensis Leaf Water, Diethylhexyl Succinate, Propanediol, Water, Drometrizole Trisiloxane, Ethylhexyl Triazone, Niacinamide, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Terephthalylidene Dicamphor Sulfonic Acid, 1,2-Hexanediol, Behenyl Alcohol, Methyl Trimethicone, Sodium Polyacryloyldimethyl Taurate, Hamamelis Virginiana Leaf Water, Tromethamine, Polyacrylate Crosspolymer-6, Arachidyl Alcohol, Caprylyl Glycol, Ethylhexylglycerin, Arachidyl Glucoside, Sodium Metaphosphate, Adenosine, Tocopherol, Sodium Hyaluronate, Allantoin, Citric Acid, Sodium Benzoate, Potassium Sorbate
Ingredient ratings refreshed 1 October 2026. Formulas vary by market and can change. Always compare with your packaging.
Questions about this assessment
Why does COSRX Ultra-Light Invisible Sunscreen SPF 50 PA++++ have a Low risk rating?
Manual review 2026-07-11: The recorded formula was manually reviewed. This formula contains Methyl Trimethicone, classified as low risk for consistency with MamaSkin's silicone policy. This does not indicate a known pregnancy contraindication; see the highlighted ingredient entry for its rationale and sources. The product score is a stored assessment, not a clinical safety guarantee.
Is the MamaSkin score a measure of SPF or sun protection?
No. The score and risk band describe MamaSkin's pregnancy-focused ingredient screening of this recorded formula. They do not measure SPF, UVA protection, water resistance or whether you have applied enough sunscreen. Use the protection and application instructions on your exact packaging, and review the ingredient flags separately.
Has every ingredient in COSRX Ultra-Light Invisible Sunscreen SPF 50 PA++++ been assessed?
28 of 28 ingredient entries on this page have a recorded score, evidence summary and source text. That describes documentation coverage, not proof that the finished formula has been clinically tested during pregnancy.
Does this assessment apply to my COSRX Ultra-Light Invisible Sunscreen SPF 50 PA++++?
Only if the ingredient list on your packaging matches the recorded formula shown here. Formulas can differ by market and change over time. Compare the full list, not just the product name; report a mismatch if it differs.
Does this pregnancy assessment also establish breastfeeding suitability?
No. This page presents a pregnancy-focused product assessment. Do not infer a breastfeeding conclusion from its score or label; breastfeeding requires a separate assessment of the formula and how it is used.
