Bigen Permanent Powder Hair Color is designed to elegantly color all gray or partially gray hair, enrich your natural hair color without lift. Contains no ammonia and requires no hydrogen peroxide. contains no ammonia and requires no peroxide. The results are beautiful, true-to-life, long-lasting color with a rich and natural look. Bigen Powder Hair Color is an economical way to color your hair simply use as much as needed and keep the rest for the next application.