Many people believe that if you develop grey hair early in life, you are likely to have a shorter lifespan, but that’s not true. There is no evidence to suggest any correlation between greying of hair and life expectancy. The hair on other parts of your body, like chest, arms, or legs, typically grey after the hair on your scalp and at different rates.
Once you go grey, you can’t reverse the process or prevent it through creams or vitamins, according to scientific evidence. However, if the greying was because of a medical condition, then it might be resolved by curing the condition.