I am afraid that with bc pills, what works for one does not always work for another. Yes, it is possible that it will work by 6 months but it might not. OTC was very bad for my daughter's skin. She finally went off at the 5 month mark and went on to accutane. OTC and accutane were both pretty hard on her skin. She is now on Yasmin and it is much better. She has cleared a lot in four months and this may work for her long term (here's hoping). Mostly, what's left now is scarring. She is also on spironolactone - 50 mgs. and Doryx 200 mg. and this has helped a lot. You might ask for spiro in addition to whatever bc pill you stay with. The science behind that pill makes alot of sense to me.