I've suffered with acne since I was around 14. It was never that bad, but I was on an antibiotic who's name I have forgotten for around 18 months, which worked fine at first but them the effects wore off, I was then switched to Tetracycline antibiotics for around 24 months which worked again to begin with but then once again it stopped being effective.
Now aged 17, I was put on Duac Cream - a combination of Antibiotic and 5% BP. After 8 weeks with no results, I almost gave up, but then miraculously my acne suddenly healed. I was on Duac cream for around 12 months and then once again, it stopped working, but this time it REALLY stopped working. My skin went as bad as it had ever been - People began staring, I became quite depressed and started skipping school, became rather reclusive. It ruined my 18th Birthday, and for around 3 months until February. I had no life. Sticking with Duac eventually it did begin to clear up, very very slowly, until by June my skin was once again not that bad, just the odd flare up every now and then.
I then tried experimenting a little, I gave up all dairy products for around 4 weeks and found my skin if anything got a little worse, so I stopped that and went back to eating dairy products (I felt foolish for buying into the whole 'Diet causes acne' scene which I'd slandered for so long, never again)
Then, in September, after a bad breakout. I decided to stop using Duac Cream, I thought 'If I'm going to have bad skin, I might as well not have to put up with the side effects of Duac at the same time (bleached clothes, red skin).
For around 4 weeks my skin stayed the same, moderate acne.
Then however, it started to get worse. I decided to take a new approach. I payed Â£44 (â‚¬52 / $70 US) for the much hyped Clinique 3 Step Anti-Blemish Program, which consists of a Cleanser, a Strong Toner like thing, and a moisturizer. It cleared my acne up a little, but did make my overall skin much nicer (tighten, less oil, less shiny, smooth), but did little for my actual acne (I would recommend this for those with slight acne). I managed to claim back Â£30 as a refund for it not working (which is amazing, Clinique really do treat their customers well).
I then switched to using Panoxyl 5% Water-Based BP (Aquagel), which I'm still using today.
My current regimen is
Clinique Anti-Blemish Solutions Cleansing Bar for Face (which I'm just using up the last of)
Panoxyl 5% Benzoyl Peroxide
Neutrogena Oil-Free Moisturizer
I do it twice daily, only applying the BP to my actual spots at night to avoid red-face.
My skin at the moment is breaking out bad again, and I plan to try and build myself up to two equal sized applications of BP a day, and I'm switiching Cleanser & Moisturizer to see if that helps as I'm not happy with my current ones.
I also used to have shoulder & back acne, however I cleared that 90% up by using a tanning bed once a week - I know some slate tanning as being bad for the skin, but I use a low SPF sunblock and only tan for 10 minutes a week, and it is the only thing to ever heal my body acne, unfortunately, it has no effect on my face.