What Actually Happens when Collagen Remodels or Reorganizes?

I read this a lot and wonder if this could ever be a bad thing. Could it reorganize unfavoribly and create a scar following a "laser" procedure designed to stimulate or remodel collagen? Also,different lasers have different shaped tips.Is it possible that collagen could be remodeled so that ridges appear between the shapes and show as a slightly raised scar on the surface, or that depressions are created at the dermal layer and ultimately show on the surface?

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