- An advanced serum that has been carefully formulated to improve a dehydrated, dull, or aged skin complexion - This highly acclaimed serum has the highest concentration of TEOXANE's unique, hydrating, and patented RHA (Resilient Hyaluronic Acid) technology - The blend of remarkable antioxidants and anti-ageing ingredients helps to revitalize, hydrate, and improve skin properties*. From 14 days, the skin is smoother and more toned, your complexion is brighter and your hydration is visibly improvedTEOXANE RHA™ SERUM Read Stacey's Product Review Here An advanced serum that has been carefully formulated to improve a dehydrated, dull, or aged skin complexion. Suitable for all skin types, the blend of remarkable antioxidants and anti-ageing ingredients helps to revitalize, hydrate, and improve skin properties*. From 14 days, the skin is smoother and more toned, your complexion is brighter and your hydration is visibly improved. The 100% hyaluronic acid-based TEOSYAL range is used by De