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?What determines skin color
Melanin is the substance that normally determines the color of skin her and eyes. It is the pigment produced in cells called Melaocytes. If Melaocytes cannot from Melanin or if there number decreases, skin color, will become lighter or completely white as in Vitiligo
Leukoderma is a general term that means white skin. Sever trauma, like a burn, can test destroy pigment cells resulting in leukoderma. Vitiligo is just one of the form of leukoderma