Best Procedure to Minimize Forehead Scar Appearance?

On review of the photograph, my guess is that the scar may have been traumatic in origin. The scar is oblique, traversing relaxed skin tension lines (which are horizontal in the forehead) and appears to be hypertrophic (wide and red). Given your more pigmented skin type (type 4 Fitzpatrick), the possibility of hyperpigmentation with a technique such us dermabasion is higher. I would need to see more detailed photographs before giving a defiinitive opinion. In many circumstances, scar... more