I get acne on all surface of my face. When there gone I get red marks that turn brown.

I use benzoyl face wash I think 10-15%. This sucks so bad 2 years still have brown reddish mark on my lip. Why won't they go away on their own. I'm sick of trying new things and making it more red then brown. Fml I use to feel on top of the world now I don't even hang out. This wash makes my face dry. I switch to what I use to use but that makes pimples. Need major advice I'm so over this. Before when I had acne there would be no marks. 3 years of having acne not going away I'm depressed af. I'm 21