The L'Oréal Excellence 5.02 formula is enriched with pro-keratin, which helps protect and nourish the hair during the coloring process. This hair color strengthens and hydrates the hair, leaving it shiny, smooth, and healthy-looking. It is an ideal choice for anyone who wants a cool, dark brown shade without the risk of unwanted warmth or brassiness. The color is long-lasting and maintains its richness over time.