Achieve a rich, naturally-looking color with L'Oreal Preference hair color in 521 Light Brown. This permanent hair dye delivers vibrant, long-lasting results with 100% gray coverage. The creamy formula ensures even application and smooth care for soft, shiny hair. Enriched with Pro-Keratin and collagen, it protects and nourishes your hair while coloring. Easy to use at home, it includes a conditioning treatment to lock in moisture and enhance shine. Perfect for a radiant, multidimensional light brown shade that lasts up to 8 weeks.