Dermal fillers are mostly used to improve the look of fine lines and wrinkles. As skin ages, it becomes thinner and more susceptible to sagging and wrinkles. Dermal fillers can be injected into the skin to counter volume loss. Licensed professionals can inject fillers with a needle into the lips, cheeks, and around the eyes. Fillers improve the look of aging skin and result in younger and brighter looking skin. Side effects from dermal fillers include bruising, redness, excess swelling, and pain at the injection site. Results are not permanent and typically last from anywhere between 6 to 18 months.