The Blacklight Neu:Blu Blonde Science Blue Conditioner is designed to neutralize unwanted brassy tones while nourishing blonde, light brown or lightened hair. Powered by NEU technology with squalane and high-purity chromophores, it helps balance tones while delivering hydration, softness and shine. Its conditioning formula detangles hair and improves manageability without weighing it down, leaving hair smooth, radiant and beautifully balanced. Neutralizes unwanted brassy tones Hydrates and softens the hair Enhances shine and brightness HOW TO USE After shampooing, apply evenly to towel-dried hair through mid-lengths and ends. Leave on for a few minutes depending on the desired toning effect, then rinse thoroughly.