22 citations
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January 2020 in “PeerJ” Keratin peptides in hair might help identify gender and ethnicity.
37 citations
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October 2015 in “PeerJ” Perming significantly changes hair's molecular structure, while shampoo and conditioner do not.
107 citations
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October 2014 in “PeerJ” Hair's molecular structure is mostly consistent, but genetic differences affect lipid types, which could help diagnose diseases.
55 citations
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January 2013 in “International Journal of Cosmetic Science” African hair's keratin structure is influenced by its higher lipid content.
52 citations
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April 2012 in “Journal of Investigative Dermatology” KRTAP2 genes are crucial for hair structure and may impact hair disorders and treatments.
1 citations
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October 2009 in “International Journal of Cosmetic Science” A study presented at the IFSCC Congress 2008 developed a method to simulate the aging effects on human hair keratin caused by shampooing, blow drying, and sunlight, equivalent to 100 Central European summer days, in just 5 days. Stress-strain measurements indicated significant weakening of hair structure due to these aging effects. A new keratin active, containing peptides identical to those in human hair, was created and shown to penetrate deeply into cortex cells, as demonstrated by fluorescence microscopy. This keratin active successfully prevented aging damage by strengthening the hair structure.
7 citations
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August 2006 in “Biopolymers” Researchers extracted tiny keratin filaments from human hair by unzipping its outer layer.
71 citations
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August 2005 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings” Hair keratin-associated proteins are essential for strong hair, with over 80 genes showing specific patterns and variations among people.