Preparation of Mixture: Mix 1 part Moroccanoil Color Rhapsody Ultimates Permanent Cream Color with 1 part Moroccanoil Oxidative Cream Developer 5 vol. (1.5%), 10 vol. (3%), 15 vol (4.5%), 20 vol. (6%), 30 vol. (9%), or 40 vol. (12%) in a non-metallic bowl. Use immediately after mixing. Application: Apply on dry, unwashed hair. Normal color development is 35 minutes, or up to 45 minutes for more resistant hair. Rinse thoroughly and if needed lightly shampoo with Color Care Shampoo and Conditioner. A preliminary patch test should always be performed to determine whether or not a special sensitivity exists. For complete safety test instructions and warnings, please refer to the product packaging.