As you age your skin becomes saggy and it develops lines and wrinkles. This is due to a loss of natural proteins such as collagen and elastin. In order to restore your skin to a more youthful appearance, you need a collagen stimulant applied to your skin. The skin care industry is a multi million-dollar industry that contains a lot of worthless junk. The important thing for consumers is to decipher what is junk and what is not.