Hydroquinone is a skin bleaching agent which may produce unwanted cosmetic effects if not used as directed. Test for skin sensitivity before using Hydroquinone by applying a small amount to an unbroken patch of skin and check in 24 hours. Minor redness is not a contraindication, but where there is itching or vesicle formation or excessive inflammatory response, further treatment is not advised. Close patient supervision is recommended. Contact with the eyes should be avoided. If no bleaching or lightening effect is noted after 2 months of treatment, the medication should be discontinued. There are no sun blocking or sun screening agents in Hydroquinone and since minimal sunlight exposure may reverse the bleaching effect of this preparation, it should be used only at night or on areas of the body covered by protective clothing. During daytime, Keep this and all medication out of the reach of children. In case of accidental ingestion, call a physician or a poison control center immediately.Hydroquinone contains sodium metabisulfite a sulfite that may cause serious allergic type reactions (e.g. hives, itching, wheezing, anaphylaxis, and serious asthma attacks) in certain susceptible persons.
