hydroquinone

Hydroquinone is a skin-lightening agent used to reduce the appearance of dark patches, age spots, and hyperpigmentation. It works by inhibiting an enzyme involved in melanin production, which is responsible for skin pigmentation. When applied to the skin, hydroquinone can gradually lighten areas of excessive pigmentation, creating a more even skin tone. It is typically used under medical supervision for a limited period, as improper use can cause skin irritation or unwanted lightening. Hydroquinone is available in both prescription and over-the-counter formulations, but should be used cautiously to avoid potential side effects.