After Brass Off Shampoo, apply to wet hair to tone away brassiness on dark blonde-brunette hair colours. Massage and rinse. Tone your dark blonde or brunette hair with Matrix Brass Off Conditioner. This powerful formula works to remove brassiness and give you a more vibrant color. In fact, clinical studies have shown that it reduces brassiness by up to 80% when used with Brass Off Shampoo. For best results, simply massage into wet hair and rinse. Say goodbye to dull, brassy tones and hello to beautifully toned hair with Brass Off Conditioner.