Fillers are gel-like substances made of hyaluronic acid and are injected beneath the skin to restore lost volume, smooth lines, soften creases, and enhance facial contours. Filler made of hyaluronic acid adds fullness to areas that have lost volume due to aging. Fillers are a popular choice for enhancing facial features such as cheeks, lips, chin, jaw, reducing nasolabial folds, reducing marionette lines and improving facial harmonization. The benefits of fillers are immediately visible and require little down time.