The colour of your skin is affected by skin pigmentation disorders. Pigmentation dark circles can be eliminated using laser treatment. Pigmentation is a term that refers to the process of colouring anything. The colour of your skin is affected by skin pigmentation disorders. Melanin is a pigment that gives your skin its colour. Melanin is produced by special cells in the skin. Melanin production is affected when these cells become damaged or diseased. Some pigmentation diseases affect only a small portion of the skin. Others have an impact on your entire body.