Wear suitable gloves to protect your hands. Mix the Cromatics color with the appropriate developer (follow the manufacturer's instructions for mixing ratios). Apply the mixture evenly to dry, unwashed hair using a brush, starting from the roots and working towards the ends. Ensure thorough saturation of hair for even color distribution. Process according to the recommended processing time (typically around 30-45 minutes). Rinse hair thoroughly with lukewarm water until water runs clear. Follow with a conditioner.