Blue Sky Hair

Blue hair is a type of hair color that does not naturally occur in human hair pigmentation, although the hair of some animals (such as dog coats) is described as blue. In humans, the color may occur after exposure to cobalt or indigo.

Blue hair is a type of hair color that does not naturally occur in human hair pigmentation, although the hair of some animals (such as dog coats) is described as blue. In humans, the color may occur after exposure to cobalt or indigo. See Less