I have gotten rid of two big scars with a combo of Strivectin and Retin-A. Big Pharma, I know, but they work, yo.
Also, micro-dermabrasion cloths rock. I bought ONE for a few $$ on eBay a year ago and use it every day. I am early 30s, NO Lines - not one, get carded all the time for alcohol and, are you ready for this, gaming, which is !18!. My skin looks better that it did ten years ago, but this could also be due to no longer partying like a rockstar :0) (much...).
I'm so glad you brought this up, I bet all of us do a ton of things that we take for granted in our regime. This site is great - information is more valuable than gold!!