"i am the mother of a 13 yr old boy.  his  face was bad. i would say he didn&#039;t have a clear spot on his face or back. and he was prescribed the tretinoin cream 0.025. and also an antibiotic called doxycycline mono 100mg.  doctor said give it a month and we would see a change. that was october 2015. it&#039;s now january and month 3/4 and his scars from picking his pimples are so faded you can barely see them. and his back is clear. we use both everyday.  he will still get a pimple here and there but it has given him back his confidence. the doctor said the longer you are on it the better."