I purchased 3 Obagi products on 6/15/10 and upon receipt of the product, I noticed that there is no expiration date on the "Obagi Nu-Derm Exfoderm" and the lotion is very runny; an indication that it has been expired. Nevertheless, I started using the product on 6/29/10 and up to today, it's been 6 weeks and there's no change in my skin tone; no redness and no peeling. I have purchased Obagi before through Kaiser and had seen the product worked after just 3-4 weeks. I believe I have received expired Obagi product and demanded... read full review »