The product Noah Hair Dye Brown 4.0 140ml is a brown hair dye with an intensity level of 4.0. It is designed to provide complete coverage of white hair and long-lasting color. The dye comes in a 140 ml bottle, sufficient for a complete application in most cases. This product is formulated with high-quality ingredients that help protect and nourish the hair during the coloring process. It is important to follow the instructions for use and perform an allergy test before applying the dye. Please note that results may vary depending on the type and condition of your hair. Instructions for use The minimum instructions for use for the Noah Hair Dye Brown 4.0 140ml product are as follows: 1. Wash and dry your hair before applying the dye. 2. Mix the contents of the dye tube with the developer in a non-metallic container. 3. Apply the mixture to your hair, making sure to cover all the roots and hair strands. 4. Let the paint act for the time indicated in the product instructions. 5. Rinse your hair thoroughly with warm water until the water runs clear. 6. Apply the conditioner included in the kit and let it act for a few minutes. 7. Rinse your hair again and dry it as usual. Remember to follow the product instructions and perform an allergy test before use. If you have any questions or concerns, we recommend consulting a hair coloring professional.