2 citations
,
January 2015 in “Sen'i Gakkaishi” Washing permed hair after using thioglycolic acid helps reform strong bonds, making hair stronger.
7 citations
,
March 2019 in “Journal of cosmetic dermatology” African hair has the most lipids, while Caucasian hair is more hydrated and stronger.
34 citations
,
October 1982 in “Journal of applied polymer science” Moisture content significantly affects how human hair breaks.
3 citations
,
January 2021 in “ScienceAsia” Using an enzyme and keratin treatment can significantly repair and strengthen damaged hair.
39 citations
,
April 2020 in “Clinical, Cosmetic and Investigational Dermatology” Asian hair is generally straight and thick, with unique disorders and properties, and more research is needed to understand it fully.