Stay out of the sun
Melanin gives color to skin. Darker skins have higher concentration of melanin while lighter skins have lesser. Skin lightening agents lighten the skin by reducing the melanin content in skin.
Use Melblok Products that is formulated with Non-Comedogenic ingredients and safe for use on Acne Prone Skin and help reduce acne for smooth, clear skin.
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You cannot reduce the melanin in your skin - you can take steps to prevent the sun making the skin darker by using clothes and creams.