Can yoga turn white hair to black?

There is no scientific evidence to suggest that yoga can turn white hair to black. Hair colour is determined by the amount of the pigment melanin produced by cells in the hair follicles. As people age, the production of melanin decreases, leading to grey or white hair. Several factors, such as genetics, hormones, nutrition, and stress, can influence hair colour, but yoga, in itself, has not been shown to affect hair pigmentation.