i have found that the best stuff for light acne scarring is glycolic acid and other fruit acids in various gels/creams. they dont even have to be specifically for acne...anti-aging stuff works really well cause its more concentrated. i have also been told by a dermatologist that besides expensive laser treatment ( which worked for me but is VERY expensive), the best thing for scars is time...after a while your skin will heal itself. Elicina, a cream from peru u can buy on ebay work ok too...
on another note, i know that accutane is dangerous and harsh, but if u have moderate to really bad acne, this is a miracle drug. i tried everything from clyndomicin, rentin-a, differin, proactive solution, tetraclycin, benozine, etc!!!
and nothing worked. i had acne for 10 yrs!! well, about 3 years ago, my derm. finally perscribed acutane as a last resort. i can now say that my face is clear and has been for 2 yrs....the effects of accutane are pretty much permenent. you can be drug-free forever after your tratment is over. but again, its a rough drug, and u have to be monitored throughout your treatment. BTW...this is the drug that jessica simpson used to clear her acne- NOT proactive...she actually said this in an interview 3 years ago!!
SORRY for the long post...but i hope this helps someone!