Paul Mitchell The Color XG 4RB is a professional hair color line offered by the Paul Mitchell brand. The Color XG is known for its long-lasting, vibrant shades and reliable color results. 4RD represents a red tones, natural brown shade. The Color XG is known for its high-performance, fade-resistant formula that delivers vibrant and long-lasting color. It provides full coverage for gray hair and offers exceptional conditioning properties, leaving the hair feeling soft and smooth. The Color XG line includes a variety of shades across different color families, including natural tones, reds, coppers, blondes, and fashion colors. This is a professional hair color that is usually applied by a licensed stylist in a salon setting. When applying at home, prepare your hair by washing with a clarifying shampoo to remove any product buildup or excess oils. Do not condition your hair prior to adding hair color. Mix the color by following the instructions provided in the to mix the developer and col