MATRIX SOBOOST Copper 60g

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SOBOOST are shades that can be mixed with the SoColor and ColorSync Collections to create soft pastel tones or applied full strength to pre-lightened hair for bold, vivid effects. All are intermixable for an endless variety of shade results. Blue: Ideal for neutralizing unwanted brassiness and warmth when lifting hair; and for adding cool tones to dark hair. Red: A go-to for intensifying red, red-violet and violet formulas. Copper: Boost vibrancy in auburns, warm browns and golden blondes. Yellow: An excellent solution for brightening brunettes and softening a too-strong red. Show more