Unfortunately your photograph is not of the highest resolution so enlargement does not provide the clarity needed to determine if there is only hyperpigmented streaks or an atrophic flat or groove-like or wide scar as well. I have treated successfully tribal tattoos on patients with skin of color and of Mid-Eastern decent with laser treatment. The Nd-yag laser 1064nm. might be the safest for your skin, but youshould have a test spot first. I often perform two. One behind the ear, and if no darkening occurs, then several weeks later I perform an additional test on the sun-exposed skin of the face towards the hairline. If no hyperpigmentation occurs then we can proceed with laser but it doesn't guarantee that hyperpigmentation won't develop in the treated skin surrounding the scar. Textural scars, whether raised or indented pose a problem in that treatment of them could exacerbate the current condition. Surgical revision with Z-plasties or W-plasty, Fraxel laser resurfacing with Fraxel Restore, Stage excision, chemical peel and dermabrasion can be done, but there, again, is a risk with hyperpigmenation from the procedure, some more than others.