Restylane products are sterile gels that consist of cross-linked non-animal based hyaluronic acid. Restylane lidocaine products contain in addition 0.3% lidocaine (a local anaesthetic agent. The products are injected into the skin to correct lines, wrinkles and folds in faces, to sculpt lips and enhance facial contours. They are also used to restore elasticity of skin and reduce irregularities on the skin's surface.