Our Smart formula uses hyaluronic acid along with a blend of powerful ingredients to boost natural collagen production, visibly increase lip volume and reduce the appearance of lip lines. Smart Lip Plumping Serum creates a unique sensation while plumping; the serum glides on cool and then quickly warms up, helping to instantly plump and revitalize lip color. You will feel the treatment working! Kiss and Smart Lip Plumping Serum work together to dramatically plump the look of your lips in just minutes and create visible results for hours. Continued use helps boost collagen, which increases the look of fullness, fades lip lines and wrinkles and revitalizes natural lip color.