Polylysine
What Polylysine is & what it does
Polylysine, usually epsilon-polylysine, is a naturally derived peptide made of repeating lysine amino-acid units, produced by fermentation. In cosmetics it is commonly used as a preservative or preservative booster because it helps limit microbial growth, and it can also act as a film-forming, conditioning ingredient. It is water-soluble and used at low levels to support product stability. It is generally considered a gentle, naturally sourced option for preservation systems.
What is Polylysine?
Polylysine, usually epsilon-polylysine, is a naturally derived peptide made of repeating lysine amino-acid units and produced by fermentation. It is water-soluble and used at low levels.
What does Polylysine do in cosmetics?
It is commonly used as a preservative or preservative booster that helps limit microbial growth, and it can also act as a film-forming, conditioning ingredient that supports product stability.
Is Polylysine safe?
It is generally considered a gentle, naturally sourced option for preservation systems. It is used at low levels and is well regarded for its fermentation origin.
Sunscreens with Polylysine
We rate 4 sunscreens that contain it:
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Rilastil Acnestil Attiva + SPF 30
94/100
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Ipca Laboratories Acne-UV Advanced Light Protection Silicone Sunscreen Gel SPF 50+ Pa++++
93/100
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Ajanta Pharma Ltd Sunstop Acne SPF 80 Pa+++ Advanced Sun Protection Gel
86/100
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Laouta Sun Mist SPF 30 Kakao
60/100