An anti-yellow conditioner a la Centaurea for gray and blonde hair by Klorane. We selected Bio Knapweed for its cyanocentature content, a plant-based pigment with bluish tones that is traditionally used to give white or gray hair a silver sheen. With detangling properties, the anti-yellow shampoo formula by Klorane with Centaurea bio gives thin hair cold tones. Soft and easy to comb, the true beauty and shine of your hair is revealed.