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POLYEPSILON-LYSINE

Description

Polyepsilon-lysine is a naturally occurring biopolymer produced through bacterial fermentation, primarily by Streptomyces albulus. This cationic polymer consists of L-lysine amino acids linked by epsilon-amino and alpha-carboxyl groups, forming a unique linear structure. In skincare and haircare formulations, polyepsilon-lysine serves multiple functions due to its positively charged nature and biodegradability.

As a preservative, polyepsilon-lysine exhibits broad-spectrum antimicrobial activity against bacteria, yeasts, and molds, offering an effective alternative to traditional synthetic preservatives. Its mechanism of action involves disrupting microbial cell membranes, leading to cell death. In haircare products, polyepsilon-lysine acts as a conditioning agent, improving hair manageability and reducing static electricity. For skincare applications, it can enhance the penetration of active ingredients and provide a smooth, silky feel to formulations.

Polyepsilon-lysine is water-soluble, heat-stable, and compatible with a wide range of cosmetic ingredients. Its safety profile is favorable, with low potential for skin irritation and sensitization. The ingredient is biodegradable and environmentally friendly, aligning with the growing demand for sustainable cosmetic formulations.