instantly neutralizes brassy hair and yellow undertones to maintain cool blonde shades. boosts hair color luminosity. illuminates blonde hair. key ingredients:hyaluronic acid: this ultra concentrated acid strengthens hair, preventing future hair breakage.edelweiss flower: rich in anti-oxidants to protect hair against daily damage and soften sensitized hair fibers.ultra violet neutralizers: highly concentrated pigments that neutralize and remove brassy & yellow undertones...