62 citations,
December 1966 in “Endocrinology” Injecting α-MSH made mice's hair turn black.
[object Object] 12 citations,
September 2018 in “International Journal of Cosmetic Science” Palmitoyl tetrapeptide-20 may help reduce hair greying and increase melanin production.
64 citations,
June 1992 in “International Journal of Dermatology” Pregnancy often causes skin changes like darkening, stretch marks, and hair growth, which may improve after childbirth.
46 citations,
July 1988 in “Journal of The American Academy of Dermatology” Hormone imbalances can cause specific skin changes, which may help in early detection of endocrine disorders.
12 citations,
January 1981 in “Springer eBooks” Environmental factors like temperature and nutrition affect hair growth, with humans showing seasonal hair growth differences.