Wrinkles that are caused by repetitive muscle movement (frown lines, crows feet, forehead lines) are best treated with tiny injections of neurotoxins (Botox, Dysport, Xeomin) into those muscles. This will temporarily reduce local muscle movement, which will prevent the overlying skin from creasing. 

Hyaluronic acid fillers are used to treat volume loss in the face, and can be used to enhance cheeks, lips, chin, jawline and undereye hollows, as well as reduce the appearance of fine lines around the mouth.  Your dermatologist will evaluate your skin, muscle movement and facial structure, as well as discuss your treatment goals, to determine the treatment that will best enhance your features.