Wella colorcharm Permanent Gel Hair Color with Gelfuse Technology means the speed of a liquid combined with the convenience and conditioning of a cream for natural, true-to- tone, fade resistant results. Predictable results - the color you want is the color you get. Excellent Gray Coverage Provides the speed of liquid, conditioning and convenience of cream. For excellent gray coverage that covers even the most resistant grays. They are also versatile ideal for bowl and brush or bottle application for better control.