Tretinoin
"When my dermatologist first gave me the cream and I began using it my acne cleared up and I had great skin, but once I kept using it on my break outs I noticed them becoming worse and worse. My skin became so dry, red/ puffy, and peely that there was nothing to do, I felt helpless, I couldn't even apply my moisturizer because it made my skin burn. But my derm assured me it was part of the process, come to find out I was actually getting minor chemical burns which currently cover my entire chin/ under my nose area. In the beginning I thought this cream was my savor and my ticket to clear skin but now my skin is worse then ever and I regret ever using it."