L'Oréal Excellence Hair Color in Deep Dark Brown (3.0) is a permanent, triple-care hair color system. It is designed to provide rich, radiant, and long-lasting color while also protecting and strengthening your hair. The formula is known for its ability to provide 100% gray coverage from root to tip. The product typically includes a protective serum, a coloring cream, a developer, and a nourishing mask to be used after coloring. It features a non-drip crème for a clean and easy application process.