Wella Illumina 7/7 hair color is a professional permanent hair dye designed for rich, naturally-looking brown tones. The 60 ml tube provides enough product for a complete application on medium-length hair. The shade 7/7 delivers a warm, deep brown color with subtle golden undertones, creating dimensional results while enhancing the natural hair texture and movement. Formulated with advanced color technology, this hair dye ensures even coverage from roots to tips while maintaining hair integrity. The creamy consistency allows for smooth application without dripping or running, making it suitable for both professional salon use and at-home application. The ammonia-free formula minimizes damage while providing long-lasting color retention, typically lasting 4-6 weeks depending on hair condition and care routine. This permanent hair color effectively covers up to 100 percent gray hair while adding shine and vibrancy. The product is compatible with various hair types, including straight, wavy, and curly hair. For optimal results, it is recommended to perform a strand test 48 hours before full application to check color compatibility and possible allergic reactions. The color development time typically ranges from 30-45 minutes, depending on the desired intensity and natural hair color. This hair color works effectively on natural hair colors from light brown to dark blonde, delivering predictable, reproducible color results. The packaging includes detailed instructions for mixing ratios and application techniques to ensure professional-quality results. The Wella Illumina series is recognized in the professional hair care industry for its color precision and reliability.