A fun color or a natural hue? A jumbo silhouette or a micro moment? And of course, one of the biggest (and first): Synthetic vs. human braiding hair. While both are great options, they aren't ...

Human skin, hair, and eyes come in a huge variety of colors ... and the same goes for skin tone and eye color. (The more melanin in the eye, the darker it is. People with blue eyes lack melanin ...

NASA via Getty Images In fact, a 2016 study “found that spaceflight alters human hair follicle gene expression,” reporting that, in some astronauts, the genes responsible for regulating hair ...

making the claim that "gray hairs can naturally regain their color when we feel less stressed," or the following Instagram post: However, a recent study titled "Quantitative mapping of human hair ...