Is leucine safe during pregnancy?
Reviewed by VeriMom Editorial Team · Last reviewed
Pregnancy-Safe Ingredients Database — 28,000+ Ingredients Rated
leucine
NO KNOWN RISKS100
/100
0









Pregnancy-safe products containing leucine

Sebamed
Sebamed Clear Face Cleansing Bar
99/100

DM.Cell
DM.Cell EGF FGF Repairing Ampule
99/100

Isntree
Isntree Hyaluronic Acid Low-pH Cleansing Foam - 150ml
99/100

Isntree Hyaluronic Acid Low-pH Cleansing Foam - 150ml
99/100

Dearskin
Dearskin Vitamin C Dear Serum
99/100

Isntree
Isntree Hyaluronic Acid Low-Ph Cleansing Foam
99/100

Round Lab 1025 Dokdo Water Gel Mask Sheet - 30ml
98/100

Esthetic House CP-1 Premium Silk Ampoule - 20ml
98/100

BLIV:U Collagen Bouncing Cleanser - 200ml
98/100

ETUDE Soon Jung Hydro Barrier Cream - 130ml (2ea) Set
98/100
Related ingredients
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Sources & references
Authoritative references used to score this ingredient.
Frequently asked questions
- Is leucine safe during pregnancy?
- Leucine (CAS 61-90-5) is an essential branched‑chain amino acid with no harmonised CLP reproductive classification and no evidence of reproductive or teratogenic effects in regulatory dossiers or the peer‑reviewed literature relevant to cosmetic topical use. Regulatory/databank sources (ECHA Annex VI, ECHA registration information, PubChem) do not list H360/H361 classifications or reproductive hazards; CIR/SCCS have no adverse safety conclusions for amino acids used in cosmetics.
- Is leucine safe while breastfeeding?
- No evidence from regulatory sources or the literature that topically applied leucine poses reproductive or lactation‑related hazards. There are no harmonised classifications or authoritative safety findings indicating risk to breastfeeding mothers or infants from cosmetic topical use (ECHA, PubChem, CosIng).
- Is leucine safe for baby skin?
- Hazard and mechanism remain score 0 (no reproductive/toxic mechanism identified). Exposure is scored 1 (low but measurable) for infants because skin barrier immaturity and higher surface area‑to‑weight increase exposure potential relative to adults, even though leucine is a small polar endogenous amino acid with low dermal toxicity and no regulatory flags (ECHA, PubChem, CosIng).
- How does VeriMom score leucine?
- VeriMom scores leucine 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 leucine?
- See our curated list of pregnancy-safe alternatives to leucine 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.