34 citations,
October 1982 in “Journal of applied polymer science” Moisture content significantly affects how human hair breaks.
November 2020 in “Journal of The American Academy of Dermatology” Fluid viscosity affects fracture design and proppant placement in hydraulic fracturing.
August 2007 in “Microscopy and Microanalysis” Hair fibers break by cuticle cell slipping, shape changing, cuticle fraying, and surface cracking when stretched under specific conditions.
25 citations,
September 2014 in “Pharmacotherapy” Hormone therapy can improve mental health and quality of life for people with gender dysphoria, but long-term effects need more research.
July 2011 in “Microscopy and microanalysis” Human hair's structure makes it tough and resistant to breaking.