Kurt Stenn has studied hair for 30 years and lectured extensively on the biology of the hair follicle. In his recent book "Hair: A Human History," he dives into the biology, evolution, and cultural history of the subject.
We asked him whether hair really grows back stronger and thicker after you shave it.
Produced by Grace Raver. Camera by Darren Weaver.
Follow TI: On Facebook
SEE ALSO: This video shows how laser hair removal works — and it’s slightly terrifying
