The Matrix Color Sync Acidic Toners Clear is an indispensable tool for professional hair coloring and toning services. This formulation is designed to refine and refresh existing color results without significantly altering the base shade. Ideal for achieving subtle tonal adjustments, enhancing shine, and neutralizing unwanted brassiness on previously colored hair. Its acidic nature helps to gently close the cuticle, locking in color vibrancy and promoting overall hair health and manageability after chemical services.