Slow to see changes on big old scars, but has changed the look of my skin more than anything I've ever tried. Helped with overall texture and tone. Improved acne scars and sun spots that i had. I immediately started treating it when they become relatively visible, after 2 or 3 weeks approx , obviously the sooner ones passed on staying conscious. But you can certainly try it. The results would however depend on the age of your scars.View Thread