Dermal filler is made of hyaluronic acid, a product naturally produced by our skin and even found in many topical cosmetic products. Fillers can add fullness to the skin by adding volume to key facial features such as lips, cheeks, and chins. They can even create stronger jawlines. Fillers can also help fill in wrinkles and lines. The right filler treatments from trained physicians can make skin look smoother, younger, and tighter.