Truss Color Semi-Permanent acts outside the hair fiber and it is ammonia-free. Prepared with the smart technology of High Performance Nano-Pigments, it is recommended when a subtle change in hair color is desired. It is ideal to tone highlights and streaks and it is very used in pre-pigmentation processes, color reconstruction in bleached hair, providing shine, conditioning while it is incredibly long lasting. 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.