Can I Have Fraxel Restore After Using Tretinoin for Years?

I have been using Tretinoin (Retrieve Cream) for a couple of years. It has been beneficial but I feel that my skin is very thin now. My questions is how long should I wait (or should I not have it) before doing Fraxel Restore? I am concerned that my thin skin will cause the Fraxel Restore laser to penetrate too deeply and hence cause scarring because of it penetrating deeper than anticipated. Will the skin go back to its original thickness eventually? Any advice would be appreciated. thank you.