How should I remove an indented scar left from stitches? (Photo)

Professional manual microneedling (no need for the added expense and risks of RF microneedling), which I have been performing for well over twenty-three years, is best reserved for treating very superficial color and texture irregularities; it's not particularly effective as a monotherapy for indented scars. Asking microneedling to do that would be like asking a hammer to act as a screwdriver. So, no suprises that this didn't work for you. What's more, all the fancy fraxel laser and RF gizmos, despite their scientific sounding or alluring names, have yet to have a whole lot of hard science to back up the marketing and social media hype that surrounds them. So, once again, no surprise that this was not particularly helpful. You would be wise to consult a board certified cosmetic dermatologist scar specialist to discuss the use of subcision to elevate and smooth the indented scar and professionally performed manual microneedling to subsequently help to better blend the scar with the surrounding normal skin. Subcision, which I have been routinely performing for issues like this since 1995, like manual microneedling has a several decades long track record for both safety and effectiveness in all skin types. Hope this helps and best of luck.