Tatcha The Silk Sunscreen SPF 50 Weightless Mineral Sunscreen

Silicone derivative with negligible systemic absorption in topical cosmetic use; treated as low risk in pregnancy and breastfeeding.

Alkyl benzoate emollient used in cosmetics; available cosmetic safety assessments do not indicate pregnancy-specific concerns with routine topical use.

Common emollient derived from fatty acids and glycerin. Used to soften skin and improve texture without pregnancy-specific concerns.

Volatile emollient/solvent used for slip, quick-dry texture and makeup wear. Reviewed cosmetic ingredient references support normal topical use, with no pregnancy- or breastfeeding-specific topical concern identified.

A large, insoluble polymer used for bulking, texture and oil absorption. Cosmetic safety reviewers concluded that this HDI polymer is safe in current cosmetic use. The finished cosmetic-grade polymer is distinct from reactive HDI monomer, and manufacturing controls should minimize residual monomer.

Solvent and humectant used to improve texture and ingredient solubility. Low systemic exposure expected from topical cosmetic use.

Volatile/low-residue silicone emollient used to improve spreadability and sensory feel. Reviewed cosmetic safety sources support normal topical use, with no pregnancy- or breastfeeding-specific topical signal identified in the material reviewed.

A silicone resin used as a film former, texture enhancer and opacifying ingredient in makeup, sunscreen and skin care. The Cosmetic Ingredient Review concluded that polysilsesquioxanes including Polymethylsilsesquioxane are safe in current cosmetic use. Available evidence does not identify a pregnancy- or breastfeeding-specific concern for normal topical cosmetic exposure.

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.

A fermentation-derived cosmetic ingredient used for conditioning or formula support. Composition depends on the organism, substrate and manufacturing controls. No pregnancy-specific reproductive or developmental hazard was identified for normal topical exposure; ingestion is outside this classification.

Mineral absorbent and texture aid used to mattify and improve slip. Reviewed cosmetic safety sources support normal topical cosmetic use; this assessment does not cover deliberate inhalation of loose powder.

Lightweight emollient used to support the skin barrier. Not associated with pregnancy-specific concerns at cosmetic exposure levels.

Camellia sinensis (green tea) leaf extract is used as an antioxidant botanical; topical cosmetic use is considered low concern with no known pregnancy or breastfeeding risks, though rare sensitivities are possible.

A mixture of smaller silk-protein peptides used for hair and skin conditioning. Cosmetic safety reviewers concluded that silk protein ingredients, including hydrolyzed silk, are safe in current practices. Protein allergy is uncommon but remains possible in a susceptible person.

A terpene alcohol used for skin conditioning and soothing. Cosmetic safety reviewers reaffirmed bisabolol as safe at current cosmetic concentrations, and reproductive and developmental testing did not identify adverse effects. Bisabolol can increase skin penetration, so formulators should consider the safety of other ingredients in the same product.

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.

Vitamin E antioxidant used to protect oils and support the skin barrier. Not associated with pregnancy-specific concerns at cosmetic exposure.

A cosmetic extract from an edible fruit, seed, grain, root or mushroom used for conditioning or antioxidant support. Normal topical cosmetic exposure is much lower than ordinary dietary exposure to the source material, and no pregnancy-specific hazard signal was identified. Exact extract composition varies, so source quality and individual food or plant allergy remain relevant.

A burdock-root extract used for skin conditioning. No pregnancy- or breastfeeding-specific hazard was identified for normal topical cosmetic exposure. Direct ingredient-specific pregnancy studies were not identified, so this assessment does not extend to oral supplements or medicinal use.

An algae-derived conditioning or texture ingredient. Composition varies by source. No pregnancy-specific hazard was identified for normal topical exposure; oral supplements are outside scope.

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.

Emulsifier and skin-conditioning ingredient composed of phospholipids. Not associated with pregnancy-specific concerns.

A botanical extract, juice or water used primarily for skin conditioning, moisturising, soothing or antioxidant support. Direct pregnancy studies of the named cosmetic material were not identified. No reproductive or developmental hazard was identified for normal topical exposure to a compliant finished cosmetic; oral herbal or medicinal use is outside this classification.

A generic cosmetic label usually referring to a processed Lactobacillus ferment, lysate or related conditioning material rather than application of an unspecified live probiotic culture. CIR concluded that the reviewed Lactobacillus ferment ingredients are safe in current cosmetic practices. No pregnancy-specific concern was identified for normal topical use, assuming appropriate identity, preservation and microbial-quality controls.

Polysaccharide carrier and bulking agent used for texture and delivery support. Reviewed cosmetic safety sources support normal topical use, with no pregnancy- or breastfeeding-specific topical signal identified in the material reviewed.

Humectant and preservative booster used to support product stability. Low systemic exposure expected from topical cosmetic use.

Hydrogenated emulsifier used to support skin barrier feel. Not associated with pregnancy-specific concerns.

Chelating agent used to bind trace metals and improve formula stability. CIR concluded it is safe as used in cosmetics; normal topical use is not associated with a pregnancy- or breastfeeding-specific topical signal in the material reviewed.

A polyglycerin fatty-acid ester used as an emulsifier, dispersant or emollient. Cosmetic safety reviewers concluded that the assessed family of 274 polyglyceryl fatty acid esters is safe in current practices when formulated to be non-irritating. No pregnancy-specific concern was identified for normal topical cosmetic exposure.

Propylene glycol is a common solvent and humectant with a long history of use; it is not considered a pregnancy or breastfeeding concern in topical cosmetics, though some individuals may experience irritation in leave-on products.

A high-molecular-weight silicone surfactant used for emulsification, dispersion and texture. Related alkoxy polysiloxanes have limited dermal absorption and are supported for cosmetic use. No reproductive or developmental concern was identified for normal topical exposure.

A polyglycerin fatty-acid ester blend used as an emulsifier and pigment dispersant. Cosmetic safety reviewers concluded that polyglyceryl fatty acid esters are safe in current practices when formulated to be non-irritating.

Solvent and humectant commonly used in leave-on products. Not associated with pregnancy-specific concerns at cosmetic exposure levels.

An inorganic acid used mainly to adjust pH or support a formula. Cosmetic safety reviewers concluded that phosphoric acid is safe in current practices when formulated to be non-irritating.

pH adjuster used in very small quantities to balance formulations. Not associated with pregnancy-specific concerns.

Sodium chloride is used to adjust viscosity and texture in formulations; topical cosmetic use is considered low concern with no known pregnancy or breastfeeding risks.

Solvent and humectant used to improve texture and ingredient solubility in topical cosmetics. Reviewed cosmetic ingredient references do not identify a pregnancy- or breastfeeding-specific concern for normal topical use.

Preservative booster and skin-conditioning agent. Considered safe for cosmetic use with low systemic exposure when used as intended.