Beauty Treatments

Pigmentation removal

Humans produce two types of the pigment melanin: the brown/black type, or eumelanin; and the amber/red type, or pheomelanin.

Eumelanin is primarily responsible for the color seen in skin, hair and eyes. In general, eumelanin is genetically controlled. The exception to this genetic control is the tanning reaction that occurs with the exposure to ultraviolet light.
Pheomelanin in fair skinned individuals often adds an orange or red hue to the hair. These people also often have green eyes and freckles.

Human complexions are generally classified into six skin types.

I - light skinned, burns easily, never tans
II - light skinned, burns easily, tans some
III - light skinned, burns occasionally, tans well
IV - light skinned, tans well, rarely burns
V - brown skinned (Asian, Indo-Asian, Chinese, Japanese), tans well, burns rarely, can sunburn after prolonged exposure to UVR
VI - black skinned (Afro-Caribbean), deeply pigmented, can burn after prolonged exposure to UVR

Pigmentation levels usually increase with age. In uncommon cases, hair may lose all pigmentation early in life. For example, some people are predisposed to premature graying. For these people, their hair may lose all pigmentation by the time they are 20 years old. Normal pigmentation may be altered by genetic defects or by acquired diseases. In some cases, this means an increase in pigmentation ( hyperpigmentation ); in some cases, it means less color

External agents can also alter skin color. For example, lightening agents, carotene or dyes used in tattooing can alter skin color. Some internal compounds -such as the byproducts of hemoglobin metabolism- may color the skin.

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