If you're unable or unwilling to stick with Accutane, try Acne.org:
http://www.acne.org/
I've had grade 3 acne for 20 years. (Ugh) I'm a long-time user of Serious Skin Care and Clear Complexions, but I wanted a product that was 100% cruelty-free. When I first saw this site, I thought no way 2.5 % benzyol peroxide would cut it for me. Much to my surprise and relief, it's working quite well!