Hi, I have been on a lot of topicals too before, ie clindamycin, BHA, AHA, BP, epiduo, and a few others for bacne. I've tried at least 15 different types of BP, and none of them work. Unfortunately, none of them ever cleared my bacne. As a matter of fact, they irritated the shit out of my skin, and made it worse. My shoulder looks like yours right now too. Topicals might possibly work for someone who's skin can tolerate it or someone who doesn't have a bad case of bacne.
Have you ever considered going on birth control or accutane?
A lot of people on here claim diet is the answer, but it didn't do much for me either. Sorry I can't be of more help, but bacne is a real pain in the ass to clear, and the only sure fire way I know of is accutane. I've never tried birth control, because I am a guy.
I love your last line "I've never tried birth control, because I am a guy." XD
Anyway, I've never tried it either, nor accutane. I'm intending to stay away from accutane because I suppose I'm too worried about the side effects that it may cause. Also, the only thing concerning diet that I've heard for sure can influence acne is sugar/caffeine and other various things like that. I tried staying away from caffeine or other sugary things and that didn't make a difference. I have a pretty terrible diet overall tho- I'm 5'7" and continue to fluctuate between 127-135 lbs tho when I stop paying attention to the crap I eat. Is acne the product of my diet? Probably not, my dad went through the same sebaceous hell when he was my age. But for someone who doesn't have acne in the genes, is acne the product of bad diet? It could be depending on how his or her body reacts to it. Maybe.
Lol, maybe you should try the birth control route then? I wish I could. I haven't done accutane either, because of the side effects. I'm afraid I'll go bald. I am seriously considering it though, seeing how everything else has failed. This past week I have dealt with a serious breakout all over my back. I must of had at least 100 zits this week. I even found 1 on my leg.
As far as diet, I've tried most of them, and still had bad acne. I did manage to lose almost 40 lbs, which wasn't good at all. I'm 5'10", and normally range from 160-170. I got to 130, and still had acne. I tried being a vegan, no carb diets, paleo, starvation diets, with no effect on my acne. I agree with you, if someone doesn't have genetic acne, they might be able to clear it with diet or cleansers.
Good luck, and look in to birth control, maybe? Idk.