Straighten curly hair with keratin peptides

Abstract

[Excerpt] Chemical straightening curly human hair fibres involves the use of strong reducing agents at alkaline pHs. These treatments damage the hair fibre, reduce the cross‐linking density and decrease hair’s physico mechanical properties [1]. Human hair is made of keratin and the fixation of fibres shape involve the reduction and reformation of new disulphide bonds between keratin molecules. t is known that cysteine has been applied as a reducing agent for the substitution of environmentally harmful chemicals[2]. [...]