If you have the male pattern balding gene to begin with, dbol will certainly exacerbate it. It started for me in the early 20's, but rogaine (minoxodil) and nizoral will in fact slow it down, but won't reverse it very much. Anything highly androgenic will just make you go bald twice as fast, but then again if you aren't prone to it, you could be on AAS for a long time and not lose anything