I had yag laser done on my face and under my eyes at 36. It was the best thing I've done so far to keep me looking younger and natural. I am now turning 46. I want my neck, chest and arms to continue to stay more youthful looking. I'm fortunate, I do not have a lot of sagging or discoloration, yet. I want to start rebuilding collagen and tighten the skin in these area's. Would fraxel or yag be better? Or use of different lasers for each area? He suggested 3 picture treatments for each area?