Multiple injectable Fillers are also used for correction of moderate to severe facial folds and wrinkles. Fillers are also used for correction of age- related volume loss and for augmentation. Which filler is used is all dependent on the area of treatment. The fillers that are used are all temporary Hyaluronic acid (HA) dermal fillers. HA is naturally found throughout the body. In the skin it attracts water, which allows the skin to become hydrated.