A Puzzling Question

In the body especially around the skin where the hair grows there is a certain acid or let's say rather a fluid which lubricates the hair to become black therefore as one grows old he/she produces a very small amount of it and when insufficient and exposed to sun the hair turns to another immediate color which is obviously Grey or brown attimes. The acid or lubricator is called melanin found in the hair follicles
 
In the body especially around the skin where the hair grows there is a certain acid or let's say rather a fluid which lubricates the hair to become black therefore as one grows old he/she produces a very small amount of it and when insufficient and exposed to sun the hair turns to another immediate color which is obviously Grey or brown attimes. The acid or lubricator is called melanin found in the hair follicles
The grey color comes as a result of old age where the skin gets old and they tire from their usual work. The melanin in the skin layer of the epidermis lubricates the hair that grows in the body so as one gets old and the hair is not lubricated it turns to dull colours like grey white sometimes.
 
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