The SkinMedica TNS Illuminating Eye Cream utilizes a number of unique ingredients and complexes in order to deliver significant results. This specific Eye Cream was created to help brighten and illuminate the eye area. But in addition to this, there are also ingredients in this formula that are designed to help with fine lines and wrinkles, as well as crows feet. The complex that this cream is named after, known as TNS, is a physiologically balanced, naturally secreted and stabilized combination of multiple natural messenger proteins. In addition to this complex, the formula behind this product also contains hydroxysuccinimide and chrysin, boron nitride and palmitoyl tetrapeptide-7. Hydroxysuccinimide and chrysin are both used in order to help with dark circles, while boron nitride creates an optical illusion that brightens the undereye area upon first application.