I had the procedure one time, and it really disagreed with me. I wasn't pleased with it. My face got very red in spite of everything I did to alleviate it. I put cool packs on it and finally called my doctor. His theory was that I was sensitive to something in the chemicals used for the procedure. Well, duh. I kind of figured out that one for myself.
I definitely stayed out of the sun, but I still looked like a cooked chicken. I was not happy about it. When my skin finally healed, it looked great, I'll admit, but not enough that I'm willing to put myself through the process again. Everyone is different.