Hi all, I am just wondering what the best way is to apply retinoids to the undereye area. I use retin-a micro and the people on makeup alley say that you shouldn't use any other product on top or below retin-a micro. However, Dr. B. says in the hardback that you should always mix retinoids with moisturizer around the eyes because the skin there is sensitive. For months I have been using retin-a .4% under my eyes without moisturizer and maybe using too much--I put 6 little dots and pat in). Tonight I put less and put moisturizer on top, but I worry that this will make the retin-a micro less effective and I don't want it to go to waste considering how expensive it is! How do you guys apply?