Filler or fat grafting or laser for surgery scar? (photos)

Im 24 yrs.and had undergone a scar revision last year and after that had gone through 4 laser treatments.now i notice white pigmented skin developing surrounding the scar.should i consider doing laser again?another dermatoligst suggested fat graft for my scar which he says permanent instead of filler.I really want a permanent solution which maximise the result.pls advice.im suffering.

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