Juvéderm XC is a smooth gel made of hyaluronic acid, a naturally occurring substance in your skin that adds volume and hydration. Juvéderm provides a smooth, long-lasting correction of moderate to severe facial wrinkles and folds, restoring volume and fullness to the skin, giving you a more youthful appearance. It typically provides optimal results with a single treatment with results that can last up to 9 months to 1 year. Juvéderm is most commonly used to correct smile lines, nasolabial folds, and marionette lines (lines formed near the chin). It can help to define the lip border and give the appearance of a fuller lip.