Matrix - Soboost - SoColor & ColorSync Additives

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About the Product Permanent haircolor that can be mixed with the SoColor and ColorSync Collections to create soft pastel tones or applied full strength to pre-lightened hair. DETAI LS: 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