Wella Professionals Color Touch permanent hair dye in shade 4/77 delivers professional-grade color results with lasting vibrancy. This 60 ml permanent hair coloring formula provides reliable coverage and consistent color development for salon-quality results at home. The Color Touch line is designed for comprehensive gray coverage and rich, dimensional color that maintains its intensity through multiple washes. Shade 4/77 offers a deep, cool-toned brunette result with subtle violet undertones, suitable for achieving natural-looking depth and dimension. The ammonia-based formula ensures thorough color penetration and long-lasting results while maintaining hair integrity when used according to professional guidelines. Each application provides uniform color distribution and predictable development, making it suitable for both overall color application and targeted highlighting. The product requires mixing with developer in specific ratios for optimal performance. Color Touch permanent dye is formulated to resist fading from environmental factors and regular washing, maintaining color fidelity for extended periods. The compact 60 ml size is convenient for single applications or touch-ups, minimizing product waste. This professional-grade hair color is suitable for various hair types and textures when used with appropriate developer strength. Results may vary based on natural hair color, previous treatments, and application technique. Always perform a strand test 48 hours before full application to assess color result and compatibility. Store in a cool, dry place away from direct sunlight to maintain product integrity. For best results, follow with Wella Professionals aftercare products designed for color-treated hair.