Neocell Overnighter Collagen is a dietary supplement which aids in both sleep as well as skin support. It contains the sleep hormone, melatonin, as well as gamma aminobutyric acid, a calming neurotransmitter, both of which help you to fall asleep more easily and sleep for longer periods of time. For skin support, it contains collagen which helps keep the skin firm and smooth. Hyaluronic acid helps the skin retain moisture more efficiently. Grape seed extract helps protect the skin from the aging effects of exposure to U.V. radiation. The formulation also contains antioxidants which mop up harmful free radicals in the body's system.