DescriptionTIGHTNECK™ Clinical Anti-aging Neck Serum is a rapidly-penetrating, lightweight SmartGel™ that's scientifically formulated with key anti-aging ingredients, like Hyaluronic Acid, Vitamin C, Bio-peptides, Green Caviar Extract, Caffeine and Argireline. Upon application, TIGHTNECK™ is heated by your body's natural temperature, triggering the absorption of key anti-aging ingredients by your skin. At the same time you will feel TIGHTNECK™ contract on the surface of your skin, providing you with immediate tightness. The combination leaves you with results you can see and feel in as quickly as 5 minutes. After your treatment, simply gently wipe TIGHTNECK™ from your skin with a damp cloth and enjoy that new, rejuvenated look!