I recommend a tanning bed even for just five or ten minutes. The UV rays kill bacteria under the skin.
I would also ask your doctor for Tetracycline rather than Accutane because it is so toxic but if you are getting deep scar producing acne then get on it sooner than later and nip it in the bud.
Alcohol is an excellent remedy. Hold a cotton ball with alcohol over the pimples . The alcohol absorbs into the skin and kills bacteria.
Clindamycin gel is used by many athletes but I found that it doesn't penetrate deep enough for acne. It only helps if your pimples are from clogged sweat glands which are on the surface.