In just 24 hours, replenish and recharge your skin’s natural moisture levels for clinically proven smoothing and plumping results.* Hydr8 B5 Intense is Medik8’s ultimate hyaluronic acid serum. Expertly formulated as a supercharged version of bestselling Hydra B5, this silky-soft, non-sticky serum has been fortified with superfood antioxidants and Natural Moisturising Factors (NMFs) for profound visible skin rehydration.