For your scar, you might also consider trying a new form of vitamin C- called "lypospheric vitamin C"
Its amazing stuff- comes as a liquid goo in little packets....Highly absorbable in the gut, some kind of new "delivery system." But they also recommend it for cuts and blemishes- I've tried rubbing some of spots on my face with good results (though nothing like you are describing).
Its a bit pricey. Maker is "liv-on labs." Its available thro a few internet distributors- last time I ordered, the best price I found was from "www.thegreenpharmacy.com/"