Specifically designed for lightened, highlighted or grey hair, the Kérastase Bain Lumière Refill Pouch works to illuminate blonde tones as it gently cleanses and hydrates strands. A refill for your existing shampoo bottle, the pouch is created with 82% less plastic*. The hyaluronic acid-infused formula deeply hydrates, helping to lock in moisture for long-lasting vibrancy. Antioxidant-rich edelweiss flower works to purify the hair, removing dulling agents and pollution to promote refreshed and radiant-looking results. *vs two Kérastase 250ml shampoo bottles.