"amazing but don&#039;t go off of it if you don&#039;t want your acne to return. i had mild acne about a year and a half ago and was prescribed doxy and it completely cleared up my acne with differin. i went from mild acne to literally perfect skin and my dark marks disappeared too (maybe the differin too). i went off of the doxy because my skin was perfectly clear, and my acne was back within a month and now my skin is an absolute disaster, moderate acne and hyperpigmentation everywhere. i completely regret going off of this pill, and am so insecure now. i just went back on doxy about 3 days ago and am hoping my skin returns to what it once was. also doxy made my skin burn in the summer so be careful."