Scalp and skull injury after a fall 2 years ago, since had neurosurgery. How to fix this!

Scars like this from accidents, scalp and brain surgery are very difficult to treat. This man researched us and found Scalp Micropigmentation and wanted to know if this would work for him. Alternatives would include a series of balloon expanders, but this will be expensive and take considerable time, something very difficult for this man as he will be traveling from out of the country. He seems to have an elevated scar in the middle of the other scars which could be flattened with steroid injections prior to having Scalp Micropigmentation.