Dermal fillers are anti-aging products that are injected into the skin of patients to add volume. They are injected to make skin that is sagging or has become wrinkled because of age look smooth and plump. They are also called injectable facial fillers, injectable cosmetic fillers or soft tissue fillers.  They are made of hyaluronic acid taken from animals or from the fat of the patient. It takes five minutes to an hour to perform dermal filler procedures.