Bigen Speedy Hair Color Conditioner in Brownish Black (No. 882) is a quick-acting hair dye that contains natural herbs. It effectively darkens gray hair in just 5 minutes, offering a convenient and efficient hair coloring solution. This product is a hair coloring treatment that should be used according to the package instructions. As with all hair dyes, it's recommended to perform a patch test 48 hours before application to check for any potential allergic reactions.