Hydroquinone
Hydroquinone works as bleaching agent for skin and works as skin-lightening agent.
Gold precipitate from aqua regia solution using hydroquinone. It was so simple and attaining 99.99% purity after firing was an incredible delight. Refining the silver chloride left over from the solution was a little more of a chore but I got to within 80%.
Benzene-1,4-diol or quinol, is an aromatic organic compound that is a type of phenol, a derivative of benzene.
Skin bleaching agent
Hydroquinone works by blocking the process in the skin that leads to discoloration. Hydroquinone helps to lighten the dark patches of skin caused by pregnancy, injury to the skin.
