Awasome Hair Shaft Function Ideas. The hair follicle cycles through three different growth phases: Help repair your skin after a wound or an injury.
In animals and nonhuman primates, hair maintains temperature by retaining heat or preventing cold. Web the hair shaft is the part of the hair not anchored to the follicle, and much of this is exposed at the skin’s surface. Hair becomes erect through the action of tiny smooth muscles known as erector pili muscles.
