L'Oréal Excellence 400 features the brand’s advanced formula enriched with pro-keratin, which helps protect and nourish the hair during the coloring process. The formula ensures long-lasting color, complete gray coverage, and leaves hair looking healthy and shiny. The color stays vibrant and rich without fading into dull or brassy tones, providing a natural, radiant finish. L'Oréal Excellence Hair Color 400 is ideal for anyone who wants deep, rich brown hair with an eye-catching red undertone, while keeping the hair nourished and healthy.