Suggest Treatment For Black Heads On Cheeks And Chin

I have oily skin. And mild acne. My pores are a little bigger on my cheeks and I have black heads inside some of them. I get black heads on my nose. I also getblack heads on my chin not a lot though. I have little white dots that can pop like white pimples on my chin but they never go away. On my fitness I get a few pimples not a lot though. My main concern is the scars though! They look really bad to me. How can I get rid of dark scars/dark pinkish marks I need to get rid of some scars on my back on top I also have scars allover my one arm and dark scars on my shoulders chest and some on my face. I have one scar on my face that's a little lighter and it blends in with my skin better. But everytime it's barely touched, it turns red! It won't go away. Please help me. (my main concern is mostly the scars though) I need a product that really works and doesn't take more than 2 months