acne
"I'm 19 and have had acne since I was 11. I have oily skin. I've tried almost every over the counter acne treatment, and to name some: Shiseido, Clearisil, Proactiv, Clinique, Obagi.

They all slowly showed results, but then stopped working. I was told to take doxycycline for 2 months straight. I started taking my dosage diligently (100 mg/2 tablets a day) for 2 weeks, but then stopped. Results weren't instant, of course, but a week after stopping all the (extremely) dark marks I had all over my face had faded significantly and I would only get a pimple every couples of weeks, then the acne came back.

I started again, have been using it for 2 months straight, have clear skin, and only get acne during my period. I couldn't be happier."