research Action of Nucleophilic Reagents on Hair Keratin 9 citations , January 1981 Nucleophilic reagents break down hair keratin, forming more lanthionine and lysinoalanine than in wool.
research Key locations of oxidative damage in human hair keratins after heat and ultraviolet light exposure September 2025 in “International Journal of Cosmetic Science” Heat and UV exposure damage hair structure by altering keratins.