12 citations
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June 2011 in “Journal of applied polymer science” L-phenylalanine and hydrolyzed eggwhite protein deeply penetrate human hair.
70 citations
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June 1998 in “Polymer” Permanent waving damages hair by disrupting its keratin structure.
4 citations
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January 2007 in “Sen'i Gakkaishi” Permed hair degrades faster and shows more damage after protease treatment compared to untreated hair.
45 citations
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December 2006 in “Biopolymers” Permanent waving weakens hair by altering its protein structure.
October 2024 in “Cosmetics” ATG effectively reduces hair frizz without damaging hair strength.