Measuring Hair
March 2014
in “
CRC Press eBooks
”
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.