Best serum for what? Are you supposed to get a shot of this serum? Do you drink the serum and it is supposed to add 15 years to your life? I wonder if people are claiming this serum is the eternal fountain of youth? Actually, the kind of serum we are going to discuss in this article has nothing to do with the previously mentioned questions. We are talking about the type of facial serums you would apply to reverse the aging process, get rid of facial imperfections, and generally give you healthier looking skin.