ive had acne for 7 years, im 17 too, were still teenagers, we will still get acne, some 20 something year olds do, i know adults do, if dermo- cream isnt working (it seems like it might have been steroid cream? or was it normal cream), diet change (i know people who say stopping milk reduced the amount of acne they have), reduce stress, better skin care routine and patience, your acne may or may not clear either way it wont be the same time as others