Introducing KLORANE's A LA CENTAUREA BIO shampoo, specially designed to combat yellowing in gray and blonde hair. This unique formula harnesses the power of BIO knapweed, rich in cyanocentaurein, a plant-derived pigment known for its bluish hues that enhance the silver sheen of white or gray hair. The anti-yellowing properties of Klorane's knapweed BIO shampoo impart delicate cool tones, making hair soft and manageable while unveiling its genuine beauty and luster.