Promois WK-HSIGF is a silylated derivative type of hydrolyzed keratin. It protects and repairs hair, and improves its texture by a heat enhancing effect that results in the formation of a film on the hair in response to heat from hair dryers or hair ironing. Keratin is one of the structural proteins composing the stratum corneum, hair, and nails. 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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SEIWA KASEI Co., Ltd. develops chemicals from the hydrolysis of various natural materials, such as proteins. They evolved the technology by developing various chemically-modified derivatives of hydrolyzed protein(peptide). Their innovative technology for the fusion of peptide and silicone has allowed them to develop unique new hybrid polymers. Recently they develop the whole new technology, fusion of glycerin and physiological active substance, resulting in the birth of novel functional ingredients, such as arginine derivative and vitamin C derivatives. The company aims to maintain its unique identity while continuing to respond to the increasingly diverse requirements of their customers.
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