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HYDROQUINONE (hahy droh kwi NOHN) is applied to the the skin to lighten areas that have darkened. Some products also contain sunscreens.
METHOXSALEN (me THOK suh luhn) is a skin coloring and light sensitizing agent. This medicine is given before ultraviolet radiation. It is used to treat severe psoriasis and vitiligo. Some forms of this medicine are also used to treat the skin symp...