Restylane and Restylane Lyft are hyaluronic acid fillers that add volume and fullness to the skin to correct moderate tosevere facial wrinkles and folds. When injected near cheekbones and into the deeper folds around the nose and mouth, they contour the face, instantly lifting and tightening several areas at once. Restylane Silk is specifically designed for subtle lip enhancement and improvement of lipstick lines. There is little to no downtime after the treatment. Results typically last six to twelve months.