You can try all the acne scar treatments that you want, and some of them can work really well. However, it's really better to just prevent getting the acne scars to begin with!
Your skin is very delicate, and if you are continually pinching, poking, and prodding at it, then you can't be surprised when it scars up.
And although scars do fade, who wants all that on their face if they can prevent it. Now granted, some people can't help it, like those with cystic acne. But I'm talking about the people who have to poke and prod at every little spot until it turns into a huge thing.
The best way to take care of a pimple or blackhead is to leave it alone! Just keep your hands off of it until it is clearly ready. In the case of a pimple, that's when it has a visible white head and is obviously ready to pop. In the case of a blackhead, it is when it is black and hard.
Now, when you are ready to pop, make sure that you wash your hands first, and then use the right equipment -- either a comedone extractor (you can get one from Bodyshop for about 5 bucks) or some Q-tips. Gently -- gently! -- press the skin around the spot and if it is ready, the surrounding skin will push the spot out.
If it doesn't pop out almost immediately, then give it another day and try again.
You would be amazed at how many acne scars you can prevent this way!