Enhance your dark brown hair with rich, warm mahogany tones using Matrix SoColor 4M (4.5). This professional permanent hair color delivers 100% grey coverage while protecting and strengthening hair fibers with pre-bonded technology. It leaves hair soft, smooth, and glossy, providing a long-lasting, natural-looking finish. Ideal for achieving a deep, salon-quality mahogany brown at home or in professional settings. 100% grey coverage with rich dark brown mahogany tones Pre-bonded formula strengthens and protects hair during coloring Long-lasting, fade-resistant color Smooth, soft, and conditioned hair after application Suitable for all hair types, professional or home use