Juvéderm: You will see results immediately/instantly. Restylane: Depending on your volume needs, most Restylane treatment appointments last less than an hour and begin to work almost immediately by adding volume to smooth away wrinkles. A clear gel formulation of hyaluronic acid, Restylane products act like your body's own hyaluronic acid (and eventually break down naturally). Each Restylane product is designed for a specific purpose.