As we age, our face gradually loses its facial fat and volume, resulting in a gaunt, haggard appearance. Fillers can be used to effectively replace volume and restore a more youthful, rejuvenated appearance. Fillers can also help to fill and smoothen out certain facial lines and wrinkles. Commonly, areas such as the nasolabial folds (lines along the sides of the nose), marionette lines (lines that run from the sides of the lips to the chin), glabella ( the groove in between the eyebrows),  tear trough ( the hollow region below the eyes) can be treated. Fillers can also be used to add volume to the cheeks, chin and lips. Hyaluronic acid fillers are the most widely used fillers.