I have actually been fortunate throughout my teens and my adult years that I have never had really bad acne. I remember when I was young, I had a lot of friends and acquaintences that did have huge issues. Now that I am adult, my face is pretty clear but every now and then I get a zit or two that just won't go away. I mean they do, but then a few weeks later they are back. A friend of mine told me to try something called Differin. Maybe I'll give it a try.