Should I Avoid trimethyl pentanyl diisobutyrate During Pregnancy? | VeriMom

What to use instead

Pregnancy-safe ingredients that serve a similar function:

Pregnancy-safe products to use instead

Products built around the safer ingredients above, scored "no known risks" or "low risk".

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bareMinerals

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Pregnancy-Safe Alternatives to trimethyl pentanyl diisobutyrate | VeriMom

Ingredients — Pregnancy-Safe Ingredients Database — 28,000+ Ingredients Rated

See also

• Is trimethyl pentanyl diisobutyrate safe during pregnancy?
• Is trimethyl pentanyl diisobutyrate safe for babies?
• What are pregnancy-safe alternatives to trimethyl pentanyl diisobutyrate?

FAQ

Is trimethyl pentanyl diisobutyrate safe during pregnancy?

Trimethyl pentanyl diisobutyrate (TXIB; CAS 6846-50-0) has a harmonised/suspected reproductive hazard classification (H361) in regulatory sources and registration dossiers reporting reduced implant numbers and reduced litter weights in an OECD 421 rat study, supporting a suspected reproductive hazard. (ECHA registration dossier and SDS reporting H361; see sources). In vitro and ex vivo studies (fetal testis organ culture; gonadal cell lines) show biologically plausible effects on reproductive endpoints/sex-hormone related parameters, indicating a demonstrated mechanistic signal. Topical cosmetic exposure would generally give low but measurable systemic exposure (so e=1) for pregnant adults absent product-specific dermal absorption data.

Is trimethyl pentanyl diisobutyrate safe while breastfeeding?

Same hazard basis applies (harmonised H361 / OECD 421 reproductive findings). Mechanistic data (in vitro/ex vivo endocrine-related effects and interactions with sex-hormone binding protein) support potential for reproductive/endocrine activity. With typical topical cosmetic use, maternal systemic exposure is expected to be low but measurable; specific data on transfer into human milk are not available, so exposure is scored as low (e=1).

Is trimethyl pentanyl diisobutyrate safe for baby skin?

Hazard and mechanistic evidence remain the same (H361; animal reproductive/developmental signals; in vitro/ex vivo endocrine-related findings). Infant skin has higher absorption per kg, so exposure score is increased by +1 versus adults (adult e=1 → baby e=2) in the absence of definitive dermal absorption data for cosmetic formulations intended for infants.

How does VeriMom score trimethyl pentanyl diisobutyrate?

VeriMom scores trimethyl pentanyl diisobutyrate at 20/100 (high risk) 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 trimethyl pentanyl diisobutyrate?

See our curated list of pregnancy-safe alternatives to trimethyl pentanyl diisobutyrate based on similar function and a no-known-risks safety band.