ε-Polylysine
Polyepsilon-Lysine
A naturally derived antimicrobial ingredient produced through fermentation. It is used as a preservative to help protect cosmetic formulations from microbial contamination.
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Safety: Generally well tolerated by most skin types.
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Comedogenic rating(likelihood of clogging pores)
Rating not yet available for this ingredient✓ Does not disqualify fragrance-free, alcohol-free, SLS-free or paraben-free claims
Common names & aliases
Epsilon-PolylysinePolylysine
Functions
🔒 Preservative
Prevents bacterial and fungal growth, keeping the formula safe to use.
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Found in these products