Human hair can almost fully recover its structure within about 1,000 minutes after being stretched.
19 citations,
July 2018 in “ACS biomaterials science & engineering” Bleaching and combing damage hair's surface and mechanical properties.
January 2010 in “Springer eBooks” Hirsutism can lower a woman's quality of life, causing emotional distress and affecting social and work opportunities.
11 citations,
February 2008 in “British journal of nursing” Idiopathic hirsutism causes excessive hair growth in women, can be treated with medication and hair removal, but cannot be fully reversed.
February 2022 in “Cosmetic Dermatology” Permanent hair waving uses chemicals to create long-lasting curls.