I had the obagi blue peel twice. The first time i didn't follow instructions and went out in sun,and my face stayed bluish.
Doctor recommended I do it again-I waited 9 months to do again and didn't go out in sun-well 6 months later my face, mainly cheeks have a dark shade to them compared to other areas,in other words I have real bad hyperpimentation-what a mess, I spent 300 each peel, then another 1000 for skin bleachers, etc, and nothing has worked. My next move is laser skin resurfacing which will cost 1000 with another dr. of course.
Remember the Obagi goes in deep-don't do it-there's someting wrong, unless you want to look bluish forever.