Restylane is a dermal filler made of hyaluronic acid. Hyaluronic acid injections are used to improve the skins’ contour and reduce depressions in the skin due to scars, injury or lines. This filler restores volume and fullness to the skin to correct facial wrinkles and folds, making this an ideal product for the nasolabial folds (the dip ridges occurring between the nose and mouth area). Restylane is also great for providing beautiful lip fullness.