I agree, the obagi has a system they want you to buy to help with the peel that is expensive and then you still have to pay for the blue peel which is just a TCA peel. It is suppose to prep your skin but you can just use some Retin-a a few weeks before to prep or you don't have to prep, just do a TCA peel. It's a strong people so it's not one of those peels you aren't going to see any results from. It's a medium depth peel. I know people that did obagi and people that didn't and seeing their results it ended up being pretty much the same, except for the friends that did obagi were out alot more money because they had to buy all the prepeel products. They both work pretty well but basically, it's a money maker, just go for the TCA Peel.