45 citations
,
December 2006 in “Biopolymers” Permanent waving weakens hair by altering its protein structure.
70 citations
,
June 1998 in “Polymer” Permanent waving damages hair by disrupting its keratin structure.
10 citations
,
November 2013 in “Biochemistry and Molecular Biology Education” Keratins are crucial proteins for hair and nails, with a structure that helps teach protein principles.
9 citations
,
July 2014 in “Skin research and technology” Stretching damages Caucasian hair's structure more easily than Asian hair.
40 citations
,
September 2004 in “Biomacromolecules” The Glu413Lys mutation in keratin affects hair stability, while Glu413Asp does not.