René Furterer Color Radiance Shampoo for Color Treated Hair 100ml is designed to gently wash hair by removing limescale and impurities responsible for loss of color shine. This shampoo for color-treated hair has a formula enriched with natural ingredients: organic okara extract, rich in keratin-like amino acids, deeply conditions and strengthens hair. Organic witch hazel extract acts as a natural color fixative thanks to its tannins, while organic lemon essential oil, with antioxidant properties, smoothes the scales of the hair fiber and protects hair weakened by coloring.protects against fading and preserves the brightness of the color for 8 weeks.suitable for frequent use.