The Silk Sunscreen SPF 50 Weightless Mineral Sunscreen

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

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

Sources: CIR Safety Assessment of Alkyl Benzoates (2012); CIR alkyl benzoates dossier / C12-15 alkyl benzoate data.

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

Sources: Cosmetic Ingredient Review (US); Scientific Committee on Consumer Safety (EU)

The final CIR alkyl PEG/PPG ether assessment includes the exact identity in its safe conclusion.

Sources: https://cir-safety.org/sites/default/files/ROPSIL_122014%20_FAR.pdf

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.

Sources: CIR: Safety Assessment of Isoparaffins as Used in Cosmetics; EU CosIng / cosmetics regulatory inventory

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.

Sources: CIR: Safety Assessment of Hexamethylene Diisocyanate Polymers https://www.cir-safety.org/supplementaldoc/safety-assessment-hexamethylene-diisocyanate-hdi-polymers-used-cosmetics-2

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)

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.

Sources: CIR: Amended Safety Assessment of Dimethicone, Methicone, and Substituted-Methicone Polymers as Used in Cosmetics; EU CosIng / cosmetics regulatory inventory

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.

Sources: CIR: Safety Assessment of Polysilsesquioxanes as Used in Cosmetics (Final Report) https://cir-safety.org/sites/default/files/PLYSIL122017FR.pdf

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

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.

Sources: European Commission CosIng ingredient inventory; CIR safety framework for microbial, fermentation-derived and biological-source cosmetic ingredients.

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.

Sources: CIR: Safety Assessment of Silica and Silicates as Used in Cosmetics; EU CosIng / cosmetics regulatory inventory

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

Sources: Cosmetic Ingredient Review (US); Scientific Committee on Consumer Safety (EU)

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.

Sources: CIR; EU/UK Cosmetics Regulation

The CIR quick-reference record identifies the exact brown-algae extract as safe under its final assessment.

Sources: https://cir-safety.org/sites/default/files/QRT-Update-Dec2025.pdf

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.

Sources: CIR: Safety Assessment of Silk Protein Ingredients as Used in Cosmetics https://cir-safety.org/sites/default/files/slkprt122015rep.pdf

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.

Sources: CIR: Final Report on the Safety Assessment of Bisabolol https://cir-reports.cir-safety.org/view-attachment/?id=6fcf160b-8e74-ec11-8943-0022482f06a6; CIR re-review material https://www.cir-safety.org/sites/default/files/bisabolol.pdf

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

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)

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.

Sources: European Commission CosIng ingredient inventory; CIR botanical safety framework and relevant plant-derived ingredient assessments; FDA food ingredient and GRAS inventories where applicable.

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.

Sources: European Commission CosIng ingredient inventory; Cosmetic Ingredient Review botanical safety-assessment framework and relevant ingredient-family assessments. No ingredient-specific human pregnancy study of normal topical cosmetic use was identified.

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.

Sources: CIR assessments of algae-derived ingredients; European Commission CosIng.

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

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

Sources: Cosmetic Ingredient Review (US)

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.

Sources: European Commission CosIng ingredient inventory; Cosmetic Ingredient Review botanical safety-assessment framework and relevant plant-family assessments. No ingredient-specific human pregnancy study of normal topical cosmetic use was identified.

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.

Sources: CIR: Final Safety Assessment of Lactobacillus Ferment Ingredients https://cir-safety.org/sites/default/files/FR_Lactobacillus_092025.pdf; CIR final report record https://cir-reports.cir-safety.org/view-attachment/?id=ef347091-d80a-2bc3-afc5-c23abbb736b9.

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.

Sources: CIR: Safety Assessment of Polysaccharide Gums as Used in Cosmetics; EU CosIng / cosmetics regulatory inventory

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)

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

Sources: Cosmetic Ingredient Review (US)

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.

Sources: CIR: Safety Assessment of Tetrasodium Glutamate Diacetate and Beta-Alanine Diacetic Acid as Used in Cosmetics; EU CosIng / cosmetics regulatory inventory

PEG-10 has no identified pregnancy-specific concern in ordinary formulated topical use. The final PEG assessment supports this exact member, but does not establish zero absorption; avoid extensive burns and maintain cosmetic impurity controls.

Sources: https://www.cir-safety.org/sites/default/files/poly_lan_w_tabs.pdf

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.

Sources: CIR: Safety Assessment of Polyglyceryl Fatty Acid Esters as Used in Cosmetics https://www.cir-safety.org/supplementaldoc/safety-assessment-polyglyceryl-fatty-acid-esters-used-cosmetics-1

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.

Sources: CIR; EU/UK Cosmetics Regulation

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.

Sources: CIR: Safety Assessment of Polyoxyalkylene Siloxane Copolymers, Alkyl-Polyoxyalkylene Siloxane Copolymers, and Related Ingredients https://www.cir-safety.org/supplementaldoc/safety-assessment-polyoxyalkylene-siloxane-copolymers-alkyl-polyoxyalkylene-siloxa-0

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.

Sources: CIR: Safety Assessment of Polyglyceryl Fatty Acid Esters as Used in Cosmetics, IJT 42(Suppl. 2), 2023; CIR December 2025 Quick Reference Table https://cir-safety.org/sites/default/files/QRT-Update-Dec2025.pdf

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

Sources: Cosmetic Ingredient Review (US); Scientific Committee on Consumer Safety (EU)

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.

Sources: CIR: Phosphoric Acid and inorganic phosphates conclusion, IJT 40(Suppl. 1), 2021; December 2025 Quick Reference Table https://cir-safety.org/sites/default/files/QRT-Update-Dec2025.pdf

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

Sources: Scientific Committee on Consumer Safety (EU); European cosmetics regulatory framework

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.

Sources: CIR; EU/UK Cosmetics Regulation

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.

Sources: CIR cosmetic ingredient safety references for alkane diols/glycols; EU CosIng / cosmetics regulatory inventory

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)

Pigment family used to provide red, yellow and black colour in makeup and tinted skincare. Insoluble mineral pigments with very low dermal absorption in typical topical use. Generally considered acceptable in pregnancy and breastfeeding. If you prefer a cautious approach, avoid inhaling loose powders or sprays.

Sources: General cosmetic ingredient safety references for insoluble mineral pigments; exposure route considerations for powders/sprays.