SoColor Sync Alkaline Toner for women from the professional American brand Matrix is a tone-on-tone, ammonia-free, brilliant hair dye. Each formula is blended with an adhesion-protecting concentrate to help maintain color integrity after the coloring process, creating persistent color and a lustrous sheen that lasts up to 20 hair washes. SoColor Sync not only helps to provide the hair fibers with an active conditioning effect, but also makes freshly colored hair soft and smooth after coloring. The universal toner is suitable for all hair types. Also, it has a convenient format of a 90 ml tube.