The pigment located in two states - a granular and diffuse. Granular pigment scattered stands out as takes the form of small granules and stains from hair reddish-brown to black. Scattered pigment gives hair a yellow-red colors. And the hair is never blue, yellow or red, that is, natural color - this is always the result of mixing. In the dark hair pigment is much more than a light, and it may even fill the entire cell. In light hair more air bubbles. Melanin is not soluble in water, but by using an alkali or concentrated acid, the pigment can be partially changed or completely destroyed.
It must be remembered that the yellow-reds brighten many times more difficult than the gray-brown. Over the years, the formation of melanin reduced, the hair loses its brightness and sedeet. But, apart from color, hair loses elasticity and that they also gave melanin. Graying hair for several reasons. Cerebral palsy symptoms often says this. First of all, it could be the result of aging, when stopped production of colored cells. Women usually start to go gray earlier than men. Premature graying is often hereditary and begins, as a rule, from the temples. Sometimes the pigment production sharply terminated because of sudden fear or stress. If the limited areas turn gray hair on his head, this is, according to specialists, may be due to inflammation surrounding the nerves. There is such a thing as Albinism (from Latin. albus - white) - congenital absence of pigmentation of hair, skin and iris. But albinism can occur due to skin diseases and poisoning strong poisons (eg arsenic).

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