Can subcision be performed on ice pick scars or tiny shallow scars (1mm to 2mm in diameter)?

Have tried lasers but they only make it look better for a year or two then back to the same as before. A sufferer told me lasers are never permanent as they only have a temporary collagen boost but subcisions have a cumulative effect? But I want to know if it can be done on smaller scars or only scars with a larger surface area?

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