The Water Works Black Cherry 30. Net weight .21oz/6g.is an activated permanent powder hair Color specially formulated to cover gray. With water works color, your hair will remain healthy and strong because it contains absolutely zero harsh chemicals or ammonia. Also great for relaxed or chemically treated hair. This long lasting permanent hair color works wonders on mustaches and beards as well! As an added benefit peroxide is not needed because the peroxide is already in the powder! Simply mix the powder hair color with water!