Hydrating skincare serum, now for hair. New Blond Absolu 2% Pure Hyaluronic Acid Serum by Kérastase is a hydrating, repairing blonde hair and scalp serum. It’s the ultimate blonde repair serum for bleached blondes, as it contains Hyaluronic Acid – with our highest concentration of Macro and Micro Hyaluronic Acid – to repair the surface damage of hair and moisturize both scalp and hair. The lightweight texture of this clear gel serum preserves the scalp barrier, leaving only a feeling of comfort. Tested on freshly bleached hair, this Kérastase serum repairs damage in one use, for stronger blonde hair, that is replenished, plumper and intensely hydrated. Just like with skincare, you can layer 2% Pure Hyaluronic Acid Serum with Blond Absolu Huile Cicaextreme hair oil, to seal in the hydration, for ultimate repair. Repairs damages in one use*, for 95% stronger blonde hair**. Recyclable bottle, made of 20% recycled glass. #YouDareWeCare *Surface damage. Instrumental test after application of 2% Pure Hyaluronic Acid Serum **Instrumental test after application of Bain Lumiere, Cicaflash and 2% Hyaluronic Acid Serum