Hydroquinone is an organic compound used in skin lightening products. It works by inhibiting the production of melanin, the pigment responsible for skin color.
This product is sold as USP grade and intended to be included as the active ingredient in OTC products and used within guidelines for safety, but is not permitted for use in products for the Canadian market. Hydroquinone USP is supplied as a light tan/tan grey or colorless crystal and the SDS should be consulted before handling.