Doea mederma work on scars that are sunken in? ?

I have reddish-acne scars on my cheek that are really sunken in (like 1/2 or 1/3 of a millimeter in) and the skin is really un-even. Would mederma work on making the skin more even? I%26#039;ve heard that it work on raised scars... Has anyone had any personal experiance with it?? Thank-you.|||I used it for a few scars and it certainly did not help me one little iota. Maybe you%26#039;d have better luck with it.