How long I should leave part 1 cosmelan on? (Photo)
Doctor Answers 2
Cosmelan has an at home treatment which is not as strong as the MD preparation. The MD preparation which is placed only in a doctor's office has hydoquinone and Retin-A compounded into the preparation. The time left on is followed by guidelines from 5 or more hours depending on skin type. Since this is a weaker preparation you should contact the company itself for guidelines.
How long does Cosmelan stay on?
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