Skip to content

Preservative

POLYEPSILON-LYSINE

CAS 28211-04-3
80

Safety score · 0–100

Good

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

Epsilon-polylysine — a natural lysine polymer used as a gentle, food-grade preservative. Approved for food in Japan and the US; well tolerated on skin.

Function

SURFACTANT - EMULSIFYINGHAIR CONDITIONINGSKIN CONDITIONING - MISCELLANEOUS

Skin benefits

  • Natural preservative
  • Antimicrobial
  • Mild profile

Known concerns

  • Less effective against molds
  • Possible interaction with anionic surfactants

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

Related preservatives

80
CALCIUM PROPIONATE
Preservative
 80
CAPRYLHYDROXAMIC ACID
Preservative
 80
ETHYLHEXYLGLYCERIN
Preservative
 80
HEPTYLGLYCERIN
Preservative
 80
METHYLHEPTYLGLYCERIN
Preservative
 78
1,2-HEXANEDIOL
Preservative
 78
AMMONIUM PROPIONATE
Preservative
 78
CALCIUM BENZOATE
Preservative

Check your shelf

Find POLYEPSILON-LYSINE in your products.

Scan any cosmetic product with LuxSense to see if it contains POLYEPSILON-LYSINE and get a full ingredient breakdown with safety scores.

This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.