I've been on a cycle of sus250/fina and my back and upper arms erupted with zits. I would be out in the sun any chance I get, scrub my back three times a day with very little results. I read some posts on b5, so I figure I try some. FIrst things first, it doesn't (well at least for me) happen over night or within a few days. It took about a week for me to notice anything, I was taking anywhere from 4-7 gams a day. But you'll notice it, you should still scrub your arms and back at least twice a day, but for anyone who hasn't tried it yet I would definitley suggest it.