Oh it is doing something, it is a chemical. The results depend on what type of skin you have. If you have baby soft, or raw hide, 12.5% will give you results. Even if it is just a good exfoliation. I think people assume they are going to shed a layer of skin like a snake does. This could happen for some, but chances are it won't happen for most. Anytime you are putting chemicals on your face you should always start out with a low % and gradually work your way up to what your skin can handle. Just like using retin-a. If you have never used it before, you don't want to jump right in and start using .1%, that is just foolish. Afterall, this is the skin on our faces we are talking about-I am curious about the 12.5% peel, I have read that some people do not peel when using the 12.5%. Does that mean it did nothing for your skin?