Can we prevent acne scars?

Best way to prevent acne scar , is to treat acne early and properly . Other than that a few simple measures may 
help :

1. Use of effective sunscreens .
2. Using tretinoin under the advice of a dermatologist . This speeds up the skin's remodeling process and helps heal post-inflammatory changes .
3. Using Alpha-Hydroxy Acids ( AHAs ) and under the advice of a dermatologist .
4. Picking at scabs should be avoided at all costs . Scabs form to guard the healing procedure that is going on below them . Pulling a scab off before it is ready hampers the healing and remodeling process which in turn lead to formation of scar .