Igora Royal 4.0 is a rich, permanent brown hair color. It offers intense color results and full gray coverage, leaving the hair looking naturally vibrant. Key Features: • Intense brown color with natural-looking results. • Full gray coverage. • Long-lasting and durable formula. • Suitable for all hair types. How to Use: Mix with the developer, apply to the hair, and leave for the recommended processing time. Rinse thoroughly after.