Single application hair color kit. 100% Gray coverage, 100% easy. Instantly eliminates gray. Shades are calibrated to match your original color. 5 Min. Won't wash out. Lasts up to 8 weeks until the gray grows back. Natural-Looking Results: 100% Natural look. The formula blends with your original hair color for perfectly professional results. Fast & Easy: Pour color base into applicator bottle. Shake & apply. Follow all instructions on the enclosed leaflet.