Is stearyl triethoxysilane safe during pregnancy?
Reviewed by VeriMom Editorial Team · Last reviewed
Pregnancy-Safe Ingredients Database — 28,000+ Ingredients Rated
stearyl triethoxysilane
NO KNOWN RISKS100
/100
0
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Frequently asked questions
- Is stearyl triethoxysilane safe during pregnancy?
- No harmonised CLP reproductive classification found (ECHA Annex VI), no SCCS or CIR safety assessment identifying reproductive hazards, and no peer‑reviewed evidence of reproductive toxicity for stearyl triethoxysilane; default assessment therefore indicates no evidence of reproductive hazard. (Sources: ECHA C&L / Annex VI; CIR; PubMed/PubChem search summaries.)
- Is stearyl triethoxysilane safe while breastfeeding?
- No data indicating maternal reproductive or lactation/breastmilk transfer hazards. No harmonised classification or published studies showing transfer into milk or lactation-related adverse effects; therefore assessed as no evidence of hazard for breastfeeding.
- Is stearyl triethoxysilane safe for baby skin?
- No evidence of developmental/infant toxicity. Dermal absorption for adults is expected to be negligible for this high‑molecular‑weight, lipophilic silane that typically reacts/hydrolyses to silanols/polysiloxanes; however, infant skin has higher permeability, so exposure score increased by +1 for 0–3 yr olds (adult exposure 0 → infant exposure 1). No infant‑specific hazard data found.
- How does VeriMom score stearyl triethoxysilane?
- VeriMom scores stearyl triethoxysilane at 100/100 (no known risks) based on EU CosIng status, ECHA hazard classifications, and peer-reviewed PubMed studies. Our scoring pipeline is fully transparent.
- What are pregnancy-safe alternatives to stearyl triethoxysilane?
- See our curated list of pregnancy-safe alternatives to stearyl triethoxysilane based on similar function and a no-known-risks safety band.
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Medical Disclaimer
This information is for educational purposes only and does not constitute medical advice. Safety scores are based on publicly available data and may not reflect all risks. Always consult your healthcare provider before using any product during pregnancy or breastfeeding.

