Acne around the chin/mouth/jaw area is most likely hormonal. It is very difficult (if not impossible!) to cure hormonal acne only with topical treatments. For me, the only thing that has worked for this kind of acne is oral contraceptives.
Yasmin cleared me in 4 months, but caused me to gain weight so I switched to OTC-Lo. I'm still clear on OTC-LO.
You might want to look into one of these low-estrogen BCPs, but remember that BCPs do not work the same for everyone.