Truss Color Permanent is a color that acts inside the hair fiber with low ammonia content. Its greatest difference ? compared to other colors in the market ? is the Nano Crystal Pigments, which are particles that penetrate deeply into the hair fiber due to their extremely small size. The nano pigments, after penetrating into the fiber, unite by agglutination after revealing the color inside the fiber, becoming a much larger molecule, which renders its exit from the hair strand difficult during washes. This technology offers a perfect coverage and color that lasts longer. These state-of-the-art pigments allow an excellent coverage of gray hair, with intense and vibrant colors, in addition to shine and conditioning. Directions Indication: 1 measure (2.12 oz./60 g ) of Truss Color Permanent to 1 oe measure (3.04 oz./90 ml) of Truss Cream Developer with the volume appropriate to the desired result. Lighteners: 1 measure of lightener to 2 measures of Truss Cream Developer (4.06 oz./120 ml). Preparation and Application: In a non-metallic container, mix until obtaining a homogeneous cream. Apply to dry, unwashed hair. Processing time: 35 min. Before rinsing, emulsify the strands with a small amount of warm water. Rinse thoroughly and apply a Truss treatment ampoule or mask. Rinse. Shampooing after application is not necessary. *Remember: Truss Color Permanent can darken the strands as many shades as desired or lift them up to 2 shades. *Do not use this product on hair with any type of hene, progressive or metallic salt hair dye. IMPORTANT ? Patch Test: Prepare a small portion of this product as if it would be used. Apply the product mixture on the forearm or behind the ear. Leave in for 30 minutes, rinse and wait 24 hours. In case there is any skin irritation, itching or burning on the site or near it, hypersensitivity to the product is proven and, therefore, it should not be used.