35 citations
,
September 2003 in “Archives of dermatology” Tiger tail bands in hair are caused by wavy hair fibers with melanin, unlike straight fibers in normal hair.
70 citations
,
June 1998 in “Polymer” Permanent waving damages hair by disrupting its keratin structure.
Moisture makes hair flexible for reshaping during blowouts.
August 2023 in “Journal of the European Academy of Dermatology and Venereology” Onycholemmal horn is a rare nail tumor in elderly women, treated by surgical removal.
20 citations
,
December 2010 in “Journal of Morphology” Lizard claws have hair-like keratins similar to those in mammals.
65 citations
,
December 2000 in “PubMed” The biology of skin and hair is complex and not fully understood.
1 citations
,
March 2019 in “Hygiene and Sanitation” Heavy metals can damage skin and hair in mice.
4 citations
,
November 1968 in “Textile research journal” Hair fibers may have a unique, non-protein sheath not previously identified.
Chemical treatments weaken hair's thermal stability and structure.
January 2001 in “Nishi Nihon hifuka” The document concluded that there are differences in hair growth cycles and skin cell turnover rates, which can be measured with electronic equipment.