early gray hair indicate nutritional imbalance ,stress, weakened immune system, get older, chemicals in smoke or gene.

early gray hair indicate nutritional imbalance stress weakened immune system get older chemicals smoke risk heart disease gene hoary hoar grizzly grey white headed dermatologists pigment vitamin old damage permanent nerve melanocyte follicles genetic mutations protein chemical hydrogen peroxide twist smoker strands trigger change color dye salon barbershop beautician beauty look