You warrant very careful assessment before choosing a service
There are lot of different ways people heal. Sensitive skin is always a concern for any resurfacing or even the non ablative services like photofacial.
Want you need is a careful examination and detailed conversation with a cosmetic surgeon regarding your history of healing and the nature of the scaring you are concerned with.
Based on that a decision can be made regarding the suitability of fotofacial or other services to make your skin look better.