Why do our hair turn gradually form black to grey and then white?

and why are some people blond while others brunettes

Why do our hair turn gradually form black to grey and then white?

This is all determined genetically by the amount of melanin and eumelanin in the cortex of the each strand of hair. Eumelanin makes up blonde and red hair, and the amount of melanin creates the depth in browns and black hair. Since melanin is darker, not everybody even has melanin in the cortex. Hair goes grey and white because as one ages, the body stops producing melanin/eumelanin gradually. Just one of the changes of getting older.... Hope this helps.

Why do our hair turn gradually form black to grey and then white?

Amount of pigmant in the hair. As a person ages, the pigmant tends to go away, thus leaving the hair white.

Why do our hair turn gradually form black to grey and then white?

Hair color is the result of pigmentation due to the presence of the chemicals of melanin. In general, the more melanin, the darker the hair color.

The change in hair color is caused by the gradual decrease of pigmentation that occurs when melanin ceases to be produced in the hair root, and new hairs grow in without pigment.

Why do our hair turn gradually form black to grey and then white?

Genes determine hair color. Don't know why hair changes. But all mammals hair turns lighter as it ages. Also, in humans there is no grey hair! Its just white hair mixed in with the darker hair, making it appear grey.

Why do our hair turn gradually form black to grey and then white?

because the fiber in our skulls gradually lose fiber and don't get as much therefore making it so that it first turns grey as a sign, that some fiber is lost then white when most of the fiber is gone.

Why do our hair turn gradually form black to grey and then white?

Genetically speaking...we are all predisposed to lacking certain things in our system...For instance, some families might have a tendancy to be low on iron, others have a copper imbalance...now, I can not say absolutely....but I believe people that gray early....lacks nickel...and probably as we all age...eventually we become deficient in many things, with nickel being one of them...so eventually, most everyone grays....Now...as far as natural hair color...it is based on what genes you are passed from your parent...Hope this helps.

Why do our hair turn gradually form black to grey and then white?

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