Why does the hair of many Black people curl so tightly? At first glance, it looks short, but if you gently stretch it with a clip, you’ll be surprised to see how much longer it actually is. In fact, this tightly coiled hair is the result of evolution, designed to protect the scalp from the intense sunlight in Africa. At the same time, it also helps repel water very effectively in rainy or highly humid conditions. #fact #viral