Retin-A: Uses, Side Effects, Dosages, Precautions - Verywell Health
https://www.verywellhealth.com/what-to-expect-from-retin-a-treatment-15952
WEBJan 6, 2022 · Retin-A ( tretinoin) is a prescription drug that is applied topically, or to the skin, to treat acne. It can be effective in treating inflammatory acne, which can cause swelling and pimples deep under the skin. It also works especially well on comedonal acne, which is the type that involves blackheads or whiteheads.
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