Someone in CARI forum mentioned dermabrasion as a way of removing scars. It is a plastic surgery procedure. It basically removes the outer most layer of your skin where visible scar tissue usually resides. It also refines the skin ie can remove all that wrinkles. Useful for acne sufferers, deformed skin (due to accidents, burns, previous surgery etc) and for a younger look! No wonder these plastic surgeons earn a tonne of money!. Not without risks eg infection albeit rare. It should be done by qualified plastic surgeons NOT cosmeticians!

Dermabrasion, American Society of plastic surgeons
infoPlasticSurgery.com
Patient's Fact Sheet, American Society for Dermatologic Surgery
JAMA & Archives - the evidence