The article, “New launch of Protesil JLH - hybrid polymer for hair colour retention,” was published on Personal Care Magazine, Cosmetics Business, and happi websites in July 2026.
Article
Personal Care Magazine
Please click Seiwa Kasei unveils hybrid polymer for hair colour retention.
Cosmetics Business
Please click New Launch: Protesil™ JLH protein hybrid polymer for hair Colour retention and “Build-Up-1 Hair” solution.
happi
Please click Seiwa Kasei’s New Protein Polymer Retains Color | happi.
Related ingredient
Protesil™ JLH
(INCI name: Trimethylsilyl Hydrolysed Pea Protein PG-Propyl Methylsilanediol Crosspolymer, Water)
Protesil™ JLH is a multifunctional hybrid polymer composed of three parts: a plant-derived protein moiety, a silicone backbone, and alkyl groups.

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