Can stress make my hair turn white? Does unwashed hair clean itself? And what causes baldness in both men and women?Cells at the base of the hair called melanocytes are responsible for producing the pigment that gives hair its colour. To do this, they need vitamin B12 and, in some cases, a deficiency in this vitamin can result in premature greying. However, once you pass the age of 30, the capacity of melanocytes to make pigment naturally begins to decrease, and they eventually burn out. The rate at which this happens is largely dictated by genetics, but smoking can also Read More

Source:: The Guardian