What would you recommend for a scar removal from stitches on upper lips? (photos)

Hello, I have stitches on my upper lip. After the stitches are removed, i do not have hair growth in this region and it looks old at this place now. Its an year now since the accident. Can you please suggest how i can get it cured. I tried growing more beard but it doesnt help much. Clean shave shows it clearly as a scar mark. Please see the picture for details.

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