Hello Jpbiosc, Welcome to Healthcaremagic!
scars/ post acne pigmentations respond to a number of treatment methods like peelings, microdermabrasion
, radiofrequency, & LASERs. Topical creams are also useful alone or in combination with these treatments. LASERs are of different types. All these methods are operator-dependant & with a good doctor any of these methods will give you about, say, 50-60% improvement. Cost varies from methods to methods & also between different centers. I hope this clarifies your query.