"i never had pimple before but once i turned 23, i was  having pimples once in a while and later it was covered in my chicks.  nothing was working out for me so i decided to see a dermatologist and he recommended aczone.  i have started using it last november 2012 and still using it.    my face is fully cleared now and it is smooth just like it was before and no spots.  although i do get pimple once in a while but it just got away. also i don&#039;t use make up much may be that&#039;s why it got cleared and nice. overall, i love it and i am glad that doctor prescribed me this one. but i just don&#039;t know how long i should use it for because my tube is getting empty and i wont get any more refills."