Skin pigmentation. There are various disorders of skin pigmentation. Is there a particular one you are concerned with. There are numerous treatments, not necessarily a "cure" per se for various skin pigmentation disorders. Laser therapy is often helpful for many skin pigmentation disorders. Please see your local dermatologist and/or plastic surgeon to discuss these options!
Improvement. Hyperpigmentation can be reduced with bleaching creams such as hydroquinone, Azelaic Acid, retinoids, cortisones, aha's and/or kojic acid.