Hydroquinone: Hydroquinone is effective.It is classified as an over-the-counter (otc) drug that may be used in concentrations of up to 2%. Most prescription-strength hydroquinone formulations contain 3–4%, but concentrations as high as 10% may be available through compounding pharmacies. Please see your dermatologist to be sure no melanoma is detected!
Answered 8/14/2013
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