34 citations
,
September 2007 in “Experimental Dermatology” This study found that the outer protein layer of Merino wool is rich in sulfur-containing proteins similar to those found in both sheep wool and human hair.
75 citations
,
November 1965 in “Textile research journal” This study found that papain/bisulfite disintegrates human hair cuticles by dissolving the endocuticle, potentially accelerated by ethanol's removal of cell membrane material.
40 citations
,
April 1999 in “Journal of Histochemistry & Cytochemistry” In this study, the researchers identified the specific subcellular localization of the protein S100A3 in the endocuticle and cortex of human hair shafts.
30 citations
,
April 2009 in “Mycoses” This study found that the fungus Microsporum gypseum enzymatically degrades keratin in human hair, with the sequence of degradation reflecting the keratinization and cystine content of individual hair components in vitro.
28 citations
,
July 1980 in “British Journal of Dermatology” This study describes a case of generalized trichorrhexis nodosa and finds that defects in alpha-keratin chain formation and low cystine levels in hair may contribute to the condition.