Along with aging, our skin turns from supple to saggy due to fat reduction under the skin. Fillers are synthetic Hyaluronic acid used to add up volume under atrophic parts of the face.
Hyaluronic acid is naturally found in the skin, and is responsible for giving volume and suppleness to face and skin. Once injected, the Hyaluronic acid absorbs water in large amounts.
To be effective, injections need to be performed by an experienced professional with knowledge and great sanitation.