Hair Extensions

In reality, there may be insufficient to explain. Humans, like all primates, are part of a trend toward sparser hair in renowned animals; the density of human hair follicles on the skin is decisively about what precise would expect for an animal of equivalent size. The outstanding inquest is why so much of human hair is short, underpigmented vellus hair, rather than terminal hair.

This is supported by Iyengar's (1998) findings that the roots of straight human hair may execution as fiber optic tubes that allow UV radiant to pass into the skin. However, it is notable that 'kinks' in fiber visit optic tubes are obvious to counter UV brilliant from passing through. In this sense, during the period in which humans were gradually losing their straight torso hair and thereby exposing the pale skin underneath their fur to the sun, straight hair would have been an evolutionary liability. Hence, tightly coiled or 'kinky' natural afro-hair may have evolved to anticipate the entry of UV light into the bod during the gradual transition period towards the evolution of dark skin.