Bigen Speedy Hair Color Conditioner Brownish Black is a popular choice for quick gray coverage, known for its ability to color hair in as little as 5 minutes. It is a "cream-on-cream" system that requires no pre-mixing, making it very convenient for at-home use or root touch-ups, Darkens gray hair in just 5 to 10 minutes, Formulated without ammonia, so it lacks the harsh chemical smell of traditional dyes, Contains 6 natural herbal extracts (Balm Mint, Fennel, Hops, Chamomile, Mistletoe, and Yarrow) and Taurine to help moisturize and maintain long-lasting color.