Oh, I feel your pain! Hello, 40 years old and still experiencing acne!! Started when I was 20 and I've had it off and on (mostly on) since then. And not just small pimples, the cystic acne that is big, deep and stays for months, then remains discolored for months. When I was younger, I was willing to go the oral medication prescription route. Now, I truly watch everything that goes into my body and I'm just not willing to pop pills any more.
Anyway, I've done the over-the-counter and the more expensive stuff formulated by doctors. Three months ago, at my wits end, I did some research online and discovered the NeoStrata line. It's rated very, very highly by average people with acne. There are lots of formulations, but the one that I chose was NeoStrata Gel Plus. It's a glycolic formulation w/ 15 AHA (I have oily skin and this formulation is recommended for that type of skin). I actually purchased it on Ebay to cut down on some costs and OH MY GOSH it has done wonders for my skin!!! (I think I paid $20 for 3.4 ounces) I haven't had a breakout since, now 3 months into it. AND -- it's diminished my fine lines and lightened my couple of sun spots on my face, too! I'm very, very happy with it and a little goes a long way. After 3 months, I've probably used 1/2 of the 3.4 ounces.
I guess I sound like an infomercial, but I have nothing to gain by promoting this line. I can tell you that I'll be using it for a long, long time and will probably step it up to the next glycolic level when this bottle runs out because I like what it's done to my sun damage.
Anyway, for what it's worth, from one acne-sufferer to another :]