Restylane is the trade name for a specific formulation of non-animal sourced hyaluronic acid most commonly used for lip augmentation. In the United States, Restylane has been approved by the FDA for cosmetic injection into subdermal facial tissues.

Restylane enhances your natural looks by restoring your skin’s volume, creating softness and revitalizing your appearance.Restylane is injected under wrinkles and aging lines of the face such as the nasolabial folds, melomental folds, "crows feet" and forehead wrinkles. It may also be used for filling aging-related facial hollows and "orbital troughs" (under and around the eyes).

The procedure is quick. It usually takes less than 30 minutes. The benefits can be seen immediately. The effects of Restylane last around 6 months. Recovery time from an injection takes around three days, as swelling and bruising can be a problem. Some practitioners will ask their patients to return to the practice two or three weeks after treatment for reassessment with view to a "top-up" if required.