Teosyal RHA 4 is a hyaluronic acid-based product of non-animal origin, ensuring extremely high biocompatibility and long-lasting results. It uses the natural ability of the hyaluronic acid molecules to absorb up to 1000 times its own weight in water for deep dermal hydration. Teosyal RHA 4 stands out with its elasticity and viscosity properties and is able to adjust to every single movement of your face in order to create the naturalness of each facial expression or emotional manifestation. The product is free from parabens and phenoxyethanol, non-toxic, and free from allergenic ingredients to guarantee your safety and health.??