March 2005 in “Journal of the American Academy of Dermatology” Adding amino acids to damaged hair can improve its strength and appearance.
98 citations
,
December 1991 in “Annals of the New York Academy of Sciences” Keratin gene regulation is similar across mammals, affecting hair follicle differentiation.
4 citations
,
January 2019 in “Micron” Fetal hair follicles have melanocytes with melanosomes at different stages, which are broken down into pigment particles in keratinocytes.
142 citations
,
September 2020 in “Journal of neurophysiology” Young adults have about 230,000 tactile nerve fibers, decreasing 5-8% per decade with age.
13 citations
,
October 2008 in “PubMed” Japanese women's curved hair has an uneven internal structure and varying amino acid composition.