FUT scar and dermarolling? (Photo)

Hello, I am trying to reduce the appearance of an FUT scar that I have on my head. I recently got it revised about 5 weeks ago and for ~2 weeks I've been using Mederma as well as silicone gel for about a week. I am thinking about dermarolling it but want to know about how effective it would be at this point? Thanks in advance

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