reduces undesirable yellow tones An anti-yellowing shampoo that keeps the blonde color of the hair by successfully removing unwanted yellow tones. Its formula includes keratin, a potent antioxidant that helps shield the hair from free radicals, and glycerin, which hydrates and repairs the hair. Principal attributes: Perfect for bleached, gray, or blonde hair reduces undesirable yellow tones amplifies the reflections of platinum replenishes and nourishes hair