Excerpt: We recently tested the Schwarzkopf Color Ultime Sapphire Black 1.4, and the results were impressive. This permanent black hair dye delivers vivid color intensity with a luminous shine that lasts up to 10 weeks, resisting fade effectively. The packaging is sleek, and the formula glide smoothly through our hair, ensuring a streak-free application. The color payoff was remarkable—quickly covering grays and providing a deep, rich hue that aged gracefully without losing its depth. While some of us noted minimal initial staining on fingers, post-wash residue was minimal. Overall, ours prove a reliable choice for those seeking long-lasting, high-impact color with a professional finish.