"fp prescribed this to me while i was on waitlist for dermatologist... i&#039;ve used this for 7 months now. i still have a lot of acne, although less. the dermatologist prescribed me alysena (bcp) to use with differin xp. three months later, i had little improvement so she also prescribed a topical antibiotic (aczone gel) which she told me to apply with differin. *** i still use differin because it has completely removed my blackheads (they used to be huge and very noticeable) *** . my skin is also much drier now."