I'm curious why this would happen. I had the CO2 about 14 years ago, I remember lots of flaking, oozing, scabbing, etc. with redness. Had my first treatment with Fraxel, and I swelled up like a balloon. Almost couldn't see out of one eye. Looked ridiciulous. Why would Fraxel, covering 20% of the area, cause swelling, but not CO2, which was 100% coverage?