Abstract
Besides the differences in skin and hair color among different ethnic groups, morphological and functional differences in skin and hair have also been demonstrated. The color of skin and hair is determined by two types of melanin, eumelanin (brown to black pigment) and phaeomelanin (red to yellow pigment). In addition to the individual mixture of these pigment types, there are also differences in the melanosome arrangement of Caucasian, Asian, and African skin. Although the epidermis thickness is the same in all people, darker skin has ahigher number of stratum corneum layers and athicker dermis with ahigher number of fibroblasts. The hairs of different ethnic groups also vary regarding shape and thickness: they are round in Asians, elliptical in Blacks and intermediate in Whites. Hair diameter is the greatest in Asians, followed by Blacks and is the smallest in Whites, whereas the number of hairs is highest in Whites, followed by that in Asians and Blacks.
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