chemical peel and microdermabrasion
deal with mostly superficial scars
unless we go for stronger peels for which the recovery time is more.
lasers can help there are quite a variety of them
a few surgical procedures too help deal with acne scars
like punch graft, subscision and so on
a good dermatosurgeon can decide which procedure will suit you the best
regarding the cost- peels and mda cost almost equal. laser is the costliest of the three.
but the exact charges depend on the location and the dermat.
you will have to research that on your own in your locality