Indent from Electrodessication for Sebaceous Hyperplasia?

I had some hyperplasia spots on my chin treated a week ago. All but the largest spot are healing normally. The largest one is still peeling/scabbing and has a fairly deep depression in the center. It looks like an indented acne scar. My derm says he's never scarred anyone with this procedure and that the spot should fill in as it heals. I'm still worried about it though, as this has never happened before. Is this normal? What can I do to promote healing and reduce the chance of it scarring?

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