Is polyepsilon-lysine safe for baby skin?

Gentle products containing polyepsilon-lysine

Tropic skincare

Tropic skincare Illuma Light Diffusing Concealer

Biocos

Masque visage purifiant Argile verte

SKOON

SKOON Ginger Lilly Oil-control Face Gel Cream

SKOON

SKOON Wow-Wow-Wonder Hydrating Serum

DAMDAM

DAMDAM Skin Mud Pure Vitamin C Mask

Tropic

Tropic Vitamin Toner

Louis Widmer

Louis Widmer Oogmake-Up Reiniging Waterproof -

Only Good

Only Good Baby Moisturising Milk

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

See also

• Is polyepsilon-lysine safe during pregnancy?

Frequently asked questions

Is polyepsilon-lysine safe for baby skin?

No infant-specific reproductive or developmental hazards were identified. Mechanistic evidence for reproductive toxicity is absent. Dermal/topical absorption data are limited, but ε‑polylysine is a high‑molecular‑weight, water‑soluble cationic polymer with published ADME showing low absorption; however because infant skin has higher surface‑area‑to‑weight and an immature barrier, exposure score is increased by +1 to reflect a low but measurable exposure potential for babies (0–3 yr) from topical application. No baby‑specific toxicity data were found. (See PubMed ADME; INCI/CosIng listing; EWG).

Is polyepsilon-lysine safe for newborns?

No infant-specific reproductive or developmental hazards were identified. Mechanistic evidence for reproductive toxicity is absent. Dermal/topical absorption data are limited, but ε‑polylysine is a high‑molecular‑weight, water‑soluble cationic polymer with published ADME showing low absorption; however because infant skin has higher surface‑area‑to‑weight and an immature barrier, exposure score is increased by +1 to reflect a low but measurable exposure potential for babies (0–3 yr) from topical application. No baby‑specific toxicity data were found. (See PubMed ADME; INCI/CosIng listing; EWG).

Can I use polyepsilon-lysine on a baby under 6 months?

We don't have baby-skin-specific data for polyepsilon-lysine. Stick to ingredients we've marked no known risks for babies until more evidence is available.

What are safer alternatives to polyepsilon-lysine for babies?

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

How does VeriMom rate polyepsilon-lysine for baby skin?

VeriMom scores polyepsilon-lysine at 93/100 (no known risks) based on EU CosIng status, ECHA hazard classifications, and peer-reviewed PubMed studies. Our scoring pipeline is fully transparent.