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Did I Have an Appropriate Procedure for Sunspot Damage?

I went to the derm this week for a large sun spot on my forehead. She started using a freezing torch and did several places on my face before I insisted she stop. She then proceeded to do my arms and hands. I should mention this was done by a doctor at a VA clinic so I cannot sue, but can complain if this is an incorrect treatment. I've never heard of anyone having sunspot damage froze off of their faces. Is it safe and should I expect scarring? Also, what is a normal healing time?

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