Matrix Tonal Control are Pre-Bonded predictable gel toners with real-time visible oxidation for ultimate post-lightening control. Real-time visible oxidation provides predictable toning results; formula colour gradually darkens as it oxidizes. Visible reflect on all pre-lightened hair. This long-lasting multi-dimensional color results is pre-blended for true-to-tone results. The formula is a smooth gel for seamless application on all hair types. Colour-coded control for ultimate predictability: Violet, Neutral, Jade, Pink, Blue and Gold. Features Real Time Visible Oxidation: Formula colour gradually darkens as it oxidises so you know precisely when its time to rinse. Colour Coded Control: Colour represents the dominant colour of the shade family for ultimate predictability. Long Lasting Multi Dimensional Results: Take control of your tone. Ammonia-Free: optimised pH to minimize cuticle swelling. Shade Chart & FAQs