Gray Target Technology: Targets only the gray hair. Replaces it with subtle tones that match your natural hair color. Easy as shampooing: No-drip formula works in 5 easy minutes. Rejuvenates hair: Vitamin enriched. Leaves hair thicker and fuller-looking. Ammonia-free formula wont damage hair. Lasts up to six weeks: Lasts until the gray grows back. Contains: haircolor; color developer.