It also lacks any pigmentation in its skin.

Now what is wonderful about the evolution of human skin pigmentation, and the phenomenon of pigmentation, is that it is the demonstration, the evidence, of evolution by natural selection, right on your body.

Because what happened, in order to ensure health and well being, these lineages of people dispersing into the Northern Hemisphere lost their pigmentation.

And what Darwin could not appreciate, or didn't perhaps want to appreciate at the time, is that there was a fundamental relationship between the intensity of ultraviolet radiation and skin pigmentation.

References External links A commoningly used ingredient to lighten hyper pigmentation NIH Office of Dietary Supplements Vitamin A Retinol binding protein Merck Manual of Diagnosis and Therapy Vitamin A Deficiency WHO publications on Vitamin A Deficiency BBC News article on Retinol's use as an anti wrinkle cream