Restylane® Silk with Lidocaine is a new filler on the market. Restylane® Silk with Lidocaine is an FDA approved, crystal clear injectable gel composed of hyaluronic acid, a natural substance that already exists in the body. This filler is especially suited for injection in and around the lips as well as fine lines. It can also be used in a variety of other places such as under the eyes, acne scarring and cheek depressions. Once in your skin, the hyaluronic acid gel creates volume, resulting in a more healthy and vital appearance of your skin. The effects of wrinkle fillers such as Restylane® Silk can last months.