Product Description This is a color treatment that deeply dyes dry hair in one application. It effectively addresses gray hair with minimal stress on the hair. How to Use Please use on dry hair. Recommended amount for semi-long hair is about three ping pong balls. (1) Distribute an appropriate amount evenly throughout the hair. Apply generously to areas where gray hair is noticeable. Please use on clean hair without any styling products. (2) Leave on for 5 to 10 minutes. For more effective results, you can leave it on longer. (3) Rinse thoroughly while wearing gloves. After wiping with a towel that can get dirty, dry your hair thoroughly with a hairdryer. Feel free to use shampoo, conditioner, etc., as desired. Before use, wet the walls and floor of the bathroom or bathtub to make cleaning easier. To maintain hair color, use once or twice a week as a guideline. The color and dyeing effect may vary depending on hair quality and the amount of gray hair, and you may not feel the effect after just a few uses. The color will gradually fade with each shampoo. If using on wet hair, towel dry to remove excess moisture before application. Safety Warnings <Notes on Color Transfer and Fading> If the