The RHA serum contains the highest concentration of TEOXANE’s hydrating and revitalising active ingredients. As with all TEOXANE products, the key ingredient is Resilient Hyaluronic Acid (RHA), which hydrates the skin by building a barrier and locking in moisture. The high-dose RHA helps to reactivate your skin’s natural mechanisms of deep regeneration: cell renewal and tissue restructuring. The RHA is also combined with powerful antioxidants, amino acids, minerals and vitamin B6 to nourish your skin. The light texture blends like a second skin, offering long-lasting hydration and an immediate tightening effect.