CO2 recovery for neck & chest - will this redness fade? (Photo)

I had a full, non-fractionated CO2 on my face, neck and chest three months ago. They did 70 percent on face and 30 percent on neck and chest. The face is great, a tad pink, but neck and chest are still very red. I'm worried I have plateaued and it will stay this way. The office said to put Vitamin C on it, but I'm concerned until I get a second opinion. It appears as a sunburn, not as angry red as after procedure. Will the redness fade or what should I do?