Is there any kind of treatment or medecine that could prevent acne scarring ?

Ok I`ll admit it I have popped alot of my whiteheads, I just can`t stand haveing a BIG yellow pimple on my forehead its embarrassing. Right now I don`t necessarily have SCARS on my face but i do have little dots where I have popped my pimples, you can hardely see them. I really don`t want to have scars in the future !! PLEASE I need some advice.