![]() ![]() Therefore, agents that can reduce pigmentation when applied topically are used worldwide, especially when hyperpigmented skin is in noticeable contrast to surrounding normal skin color. Hyperpigmentation may be perceived by the patient as disfigurement, especially when it occurs on the face and neck. SKIN HYPERPIGMENTATION Hyperpigmentation, manifested as increased or more intense skin color, is ussualy a benign phenomenon, but many occasionally represent a sign of systemic disease. AHAs, beta-hydroxy acids (BHAs), and N-furfuryladenine are promoted as nonprescription treatments for photoaging. Hydroquinone, a skin-bleaching agent (fading cream), can be used alone or in combination with an AHA for self-tratment of hyperpigmentation. ![]() ![]() Alpha-hydroxy acids (AHAs) play a role in treating both disorders. Nonprescription on product used to minimize sun exposure are discussed in chapter 39. This chapter focuses on the treatment of hyperpigmentation and photoaging once day have occurred. Although sun exposure often is not the cause of hyperpigmentation, such exposure during or after treatment may negate the therapeutic effect. Photoaging of the skin is related directly to exposure to ultraviolet (UV) radiation.
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