What Is Hydroquinone?
What's the Real Deal With Hydroquinone?
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"I recommend using hydroquinone on the full face one to two times daily rather than on the dark spot only," Roff said. This shouldn't be the only way you use hydroquinone, as treating can cause a lightening or "halo" around the dark spot. To combat this, Roff said to "alternate applications between the full face and just the spots to try and target the spots."