Bain Régénérant by Kérastase is a revitalising shampoo infused with Hyaluronic Acid and Abyssine, formulated for hair weakened by signs of ageing, dryness, dullness, frizz, lack of volume and thickness. The bain ensures a clean base for the absorption of actives and helps shield the hair fibre and scalp from environmental aggressors revealing stronger, more nourished hair. Its gel texture transforms into a rich foam, enveloping the hair with the signature Chronologiste fragrance that turns routine care into a luxurious ritual. Apply to wet hair, massage, and rinse thoroughly. Follow with Masque Intense Régénérant and Overnight Youth Serum for a fuller experience.