"i&#039;ve had mild acne ever since i was 11 but it started to get much much worse when i hit 15. so at 15 i went to a dermatologist and was prescribed tretion 0.025 cream, i didn&#039;t have a initial purge phase, but i did have really dry/peeling skin for the first month. i was using it for about 6 months, it worked miracles for my skin! it took about two months to really kick in. but then my tube of the cream got thrown away by accident and i was off of it for three weeks. my skin got worse than it initially was within that time, two months after that and i was seeing no results so i went back to my derm and got prescribed the 00.5 cream. i&#039;ve been on it for two months now and my skin is mainly clear again. this cream does work. give it time."