Our skin is covered in invisible stripes. First observed by Alfred Blaschko in the early 1900s, they appeared not to follow any known body system. Visible only under UV light, these stripes now known to be cellular relics of fetal development from singular-cell beings to fully formed humans.
The skin of arctic tribes people are dark because they get all their vitamin D from fish instead of sunlight. Their skin does not need to lighten to try and get more sun for vitamin D production.
If you leave lime juice on your hands on a sunny day, your skin can get second degree burns and be discolored for years… It’s called “margarita dermatitis” because people often get it while making margaritas outside.
The skin of all human beings is covered in stripes. They’re called Blaschko’s Lines, and they cover the body from head to toe. We just can’t see them.
Because a large number of black males are unable to shave without severe irritation, Domino’s was found in violation of the 1991 Civil Rights Act by requiring all their employees to be cleanly-shaven.
A woman spent six years without getting off her couch, allowing her skin to become attached to it.
Humans get goose bumps because of an evolutionary trait that was used to make fur stand up to make the animal appear larger.
Women are lighter skinned than men in all human populations.
The Harvard University library collection has four books bound in human skin.
The skin on the palms and the soles of the feet is 4 mm thick and the thickest skin in the body, the heel portions of the feet being the thickest portions. It’s also got the most sweat glands than in any other area.