Question

why men hv grey hairs when they grow old???​

Answer 1

Answer:

men have grey hair when they grow old because there's a substance which keep our hair black when the use of it have increased that is why the hair of men have grey hair when they grow old and it is also happens in women also

Explanation:

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Answer 2

Answer:

As we get older, the pigment cells in our hair follicles gradually die. When there are fewer pigment cells in a hair follicle, that strand of hair will no longer contain as much melanin and will become a more transport colour -- like gray, silver,white as it grows

Explanation:

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