15 year old girl, chest, back and facial acne, as well as scars?

I am 17 and also had acne since i was 13. If the prescriptions arent working you could try modifying your diet by drinking a lot of water and more fruits and veggies rrather than processed foods. You could also try natural facewashes. I mash up some avocado with lemon juice and it works really well for my skin. (I too used to have back and chest acne. prescriptions didnt work for me either so i modified my diet and use the avocado face mask and it cleared up my skin!