Paul Mitchell INKWORKS Semi-Permanent Hair Color 4.2oz (BLUE) Spark your creativity and add a punch of brilliant color to any hair with 11 intermixable colors. A gentle vegetable base formula of pure vibrant pigments delivers exceptional shine and healthy conditioned results. Fun and Fashionable hair color designed for use on natural color-treated or pre-lightened hair. Use on darker shades or dilute with White INKWORKS. Pre-lighten and use straight for more intense color results. Directions: apply to clean damp hair. Comb through until evenly saturated. Leave on hair for 15 minutes. Rinse and lightly shampoo.