Just For Men Easy Comb In Color Real Black A55 is a no-mix hair dye that provides natural-looking gray coverage in just 10 minutes. The pre-mixed formula comes with a comb applicator, allowing for easy application directly to the hair. This dye-free formula is ammonia and peroxide-free, making it gentle on hair and scalp. The color lasts up to 8 weeks until gray hair grows back.​