More than 40 percent of Americans have some grey hair by their fortieth birthday, but grey hairs can appear as early as the teens and twenties for some, or even in childhood.
A change in hair color typically occurs naturally as people age, usually turning their hair from its natural color to grey, then to white.
The most essential hair vitamin is vitamin A but the best form of this is to include in the diet is beta-carotene. This is because the hair vitamin A can be toxic if consumed in large quantities but beta-carotene has no such problems and is converted by the body into vitamin A that can be used to promote healthy hair. Of course, vitamin A is not just a hair vitamin, it is also needed for a number of other functions including normal growth of bones, skin, nails and the protective sheath surrounding nerve fibres
Moreover, another important hair vitamins that a person needs to have healthy hair include B6, biotin, inositol and folic acid. The best way to ensure that a person receives enough of these essential hair vitamins are for them to be taken as vitamin supplements. It is not just hair vitamins that are necessary for healthy hair though as there are a number of minerals that are essential, including magnesium, sulphur, silica and zinc.
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