70 citations
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June 1998 in “Polymer” Permanent waving damages hair by disrupting its keratin structure.
November 2024 in “Biophysical Chemistry” Hair structure changes immediately during perm treatment, with initial damage partially restored later.
3 citations
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January 2007 in “Journal of health science” The enzymatic method can effectively identify chemical treatments on hair.
January 2007 in “Sen'i Gakkaishi” Mf-rich hair degrades more than Ma-rich hair, especially with Proteinase K.
30 citations
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April 2009 in “Mycoses” Microsporum gypseum fungus breaks down keratin in hair by digesting it enzymatically, starting with less keratinized parts.