Acne can be treated with facewash, tablets and creams. If you are getting recurrent acne, we also need to find the underlying cause in patients of your age. Sometimes hormonal disturbances like pcod  as in your case can manifest as acne. Pcod has to be treated along with acne treatment. Otherwise you will always have recurrence.  The marks and scars can be treated with  a chemical peels and fractional carbon dioxide laser after the acne breakouts stop. Oilyness and pores also respond to peels and laser. Diet and lifestyle modifications are also very important. Please contact me with detailed history in private chat for proper consult or visit a dermatologist for the same.,