Please don't take this page as a substitute for medical advice and please consult your physician before making any decision on a product you are considering.
The first thing you need to realize is that a lot of products that claim to improve appearance are not real. Most companies have to keep their products on the market to make money. The best way to tell if a product works is to try it. It's important to test a product before you buy it, but it is also important to do a "proper" cosmetic procedure before you buy one. In my case, it was to correct my skin condition. The next thing you should know is that the majority of cosmetic companies don't use real skin cells, or at least don't report what they are using in a good way. When you go to a cosmetic company and ask for a sample, the doctor will give you a white sample of skin. They will not tell you what they are actually using, and usually they have to explain a little bit of the process that it takes to remove the "wrong" kind of cells from a person's body. I have to do this every time I apply a facial cream or powder, and then I have to try that product again to ensure it works.