Hair color is used for identifying an individual for emigration or crime detection purposes. Even socially we use the clue of hair color to place a person within a particular faction of society. The shaft of hair comes out of the skin and has three layers. The outer colorless cuticle, the inner cortex and innermost part the medulla. Melanin, the coloring pigment and the protein keratin are in the cortex.
Hair is lubricated by oil from sebaceous glands in the follicle.
But let us read more about the sweat and sebaceous glands in the next article. Used under License.