Introduction
Hydroquinone is a topical lightening product found in OTC products, and is used to correct skin discoloration associated with disorders of hyperpigmentation including melasma, post-inflammatory hyperpigmention, sunspots, and freckles. It can be used alone, but is more frequently found in combination with other agents such as alpha-hydroxy acids, corticosteroids, retinoids, or sunscreen.
Hydroquinone has come under scrutiny due to several complications associated with its use, including dermal irritation, exogenous onchronosis, and carginogenicity. As a result of these concerns, hydroquinone has been banned in the EU and UK.
Uses
Hydroquinone is a topical brightening agent used for the treatment of skin disorders associated with hyperpigmentation including melasma, post-inflammatory hyperpigmentation, sunspots, and freckles.
Hydroquinone is used as an OTC topical lightening agent for disorders of hyperpigmentation including melasma, post-inflammatory hyperpigmention, sunspots and freckles.
Associated Conditions
Mechanism of Action
Hydroquinone reduces melanin pigment production through inhibition of the tyrosinase enzyme, which is involved in the initial step of the melanin pigment biosynthesis pathway. Hydroquinone takes several months to take effect.
Food Interactions
No interactions found.
Dosage
Therapy should be discontinued when control is achieved. During the day, use a sunscreen of SPF 30, and wear protective clothing. Avoid sunlight exposure. Patients may use moisturizers and/or cosmetics during the day. Hydroquinone Cream is for topical use only. It is not for oral, ophthalmic, or intravaginal use.
