TLDR Human head hair can grow very long and is thicker than most body hair.
The document discussed the unique characteristics of human hair, noting that while most body hair is fine vellus hair, humans can grow significantly longer hair on their heads compared to other mammals. Human head hair typically measured between 20 to over 100 μm in diameter, and some individuals could grow their hair to lengths exceeding 5 ft.
7 citations,
August 2005 in “Evolutionary anthropology” Human hair is unique and important for understanding human evolution and identity.
November 2023 in “International journal of biology, pharmacy and allied sciences” Herbal treatments can help with hair problems, but more research is needed.
January 1997 in “Elsevier eBooks” Hair and nails are skin parts that develop early and serve protective and functional roles.
209 citations,
September 2008 in “Dermatologic Therapy” Androgens can both increase and decrease hair growth in different parts of the body.
8 citations,
November 2022 in “International Journal of Cosmetic Science” Human hair varies widely and should be classified by curl type rather than race.