Ultimate Anti-ageing Key ingredients : Hyaluronic acid, Viniferine, TET8™ Patented Technology (Caudalie x Harvard Medical School) Use : Morning and night, before your cream What is it ? The Serum Premier Cru offers the skin immediate and intense hydration thanks to its high concentration of hyaluronic acids (high and low molecular weight). Its formula is also enriched in firming sugars that provide an immediate effect visible after 3 minutes and for up to 6 hours. 98% natural origin ingredients Non-comedogenic Dermatologically tested Vegan 100% natural-origin fragrance Visible results +363% instant hydration* 83% saw regenerated-looking skin** *Clinical scoring, 10 volunteers, T0. **Clinical trial, % of satisfaction, 29 volunteers, 56 days. Did you know ? The Serum is 3.5 more time concentrated in Hyaluronic Acid than The Cream for deep hydration.