Developed with lightened brunettes or those with brunette balayage in mind, the Matrix Total Results Brass Off Shampoo Duo is a blue shampoo that combats unwanted brassy and orange tones. Working to deposit blue-violet dyes throughout the hair, the neutralising shampoo can be left on for 3-5 minutes, depending on your desired level of toning. Set Contents: Matrix Total Results Brass Off Shampoo 2 x 300ml