Dermal fillers used to add volume to the skin. They are composed of different substances that are safe and are naturally present in the skin. The most common one is hyaluronic acid, which found in the skin’s connective tissue. Other fillers include calcium hydroxyl apatite, which used for deeper wrinkles. They can also restore volume to the cheeks. Other fillers can derive from fat and can use to treat acne scars and facial wasting.