Juvederm Voluma contains biocompatible hyaluronic acid which is an injectable that provides instant results that are natural. Hyaluronic acid (HA) is a natural substance found inside the human body. It's key properties are to keep the skin hydrated whilst adding plumpness. HA naturally breaks down in the body during metabolism and is then replaced. However as we get older and our metabolism slows down, replacement of HA is less often which results in less hydrated skin and less volume in the skin.