Scars don't grow in! They are a result from pimples and acne and as peopel get older those symptoms don't occur as often. Once you have it done you're good until normal aging kicks in but thats YEARS later. And I don't know what this doc is talking about 5 treatments...he must be outdated becasue now they have Fraxel Repair which is fractionated (only does small portions) and results are excellent after just one treatment! Sometiems 2-3 needed. BTW....this shit hurts!