Restylane ® is a safe and natural cosmetic dermal filler approved by FDA that restores volume and fullness to the skin to correct moderate to severe facial wrinkles and folds including deep and superficial nasolabial folds. Restylane ® is the first and only cosmetic dermal filler made of non-animal based hyaluronic acid. There is virtually no risk of animal based disease transmission or allergic reaction. Restylane ® lasts 3 to 6 months, which is significantly longer than collagen, so treatments are typically scheduled two to three times a year.