Promois WK-LF is a hydrolyzed keratin of middle molecular weight. Keratin is one of the structural proteins that compose the hair, the nails and the stratum corneum of the skin. It makes up 80% of human hair. About its amino acid composition, it must be noted that keratin has plenty of cystine, the amino acid that forms a bond between the helix of the protein and thus provides physical resistance to the hair structure as well as moisture. This is why it is important to supply keratin regularly through hair care products. Promois series is a range of peptides and derivatives obtained through hydrolysis of natural proteins. There are also products with different preservatives. It is developed and manufactured in Japan by SEIWA KASEI.
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Japanese time-tested manufacturer of innovative cosmetic ingredients, SEIWA KASEI offers high-performance products based on peptides and/or amino acids and formulations with unique marketing claims and relevant data. In addition to the core products "Promois" - variants of hydrolyzed proteins and their derivatives from natural resources -, many functional ingredients are developed with our technology, such as "iVC Amitose VC series" - ideal stable vitamin C derivatives combined with glycerin -,"Amitose R" - amino acid derivatives with unique efficacy for hair, skin and scalp -,"Protesil" - multi-functional hybrid polymers with silky texture, hair color protection -,"Silasoma" - encapsulated UV-filters for sensitive skin and baby -, and "Vegetamide" -pseudo-F layer of hair cuticle with selective repair.
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