These appear to be small box scars and would benefit from skin resurfacing. Needle subcision and collagen stimulators can help complement laser treatment as well. The costs involved depend on the centre you go to but usually starts from 300 and above for a single session of either treatment.
Effects are usually seen after 2 to 3 weeks from first treatment since it is dependent on collagen remodelling. Sometimes the results can appear so gradually the individual may not notice any obvious improvement.
