Juvederm Hydrateby Allergan contains biocompatible hyaluronic acid and antioxidant (Mannitol). Also, whilst stopping any gel degradation from occurring and the risk of post-injection inflammation. Juvederm Hydrate can make the skin on the neck, face and hands appear smoother, less wrinkled and more hydrated with an increased plumpness. So, moisturization is long lasting and gives a youthful appearance. Hyaluronic acid (HA) is a natural substance found inside the human body. So, its 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.