If you would like more information about tightening, please read my book Tightening Your Skin. There are so many products that promise to tighten your skin, I don't know where to start. So I decided to make a video to help you choose the right product for you. You might notice that there are no products labeled "tightening" on this page. That is because none of the products on this page are labeled "tightening", they are just used in a variety of ways. We're going to start with an example that many people will relate to: the tightening of tight lips. If you are an Asian woman, you might have noticed that your lips tend to get tighter as you get older. There are many products on the market that claim to be able to tighten lips, but there aren't a lot of studies or evidence behind those claims. The reason for that is that there aren't enough studies to say what, if anything, these products do. So the next time you're shopping for a product that claims to tighten lips, ask yourself this question: do I really want my lips tightening? This means you have to be careful not to believe every product claim that is out there because there's a lot of research out there that is not yet conclusive.