I used doxycyclin+benzyl beroxide cream for 3months then i used erythro+azeliac acid cream for 2months then i used clyndamicin as wash..acne returned!

No surprise: Acne is a chronic, incurable, non-lifestyle-related disease that at your age is a serious personal and professional liability. If your present regimen of doxycycline, azeliac acid and benzoyl peroxide has not stopped a flare, it's time to think about the big guns. Isotretinoin is not for the faint-hearted, and is not without its own risks, but you owe it to yourself to weigh whether it's for you.