As we age, our bodies begin to lose collagen. Collagen exists in our skin, muscles, bones, and connective tissues. When collagen production is reduced, our skin becomes loose and looks older. However, fillers are used in different parts of the body like lips, face, under the eyes, and so on. Dermal fillers are used to add volume to sagging skin, plump up the face and lips, and obliterate wrinkles and creases.