Revlon Revlonissimo Colorsmetique Permanent Hair Color in shade 6.41 is a part of Revlon’s professional hair color line. This specific shade is a medium blonde with a hint of mahogany, providing a rich and warm color result.

### Key Features:
– **Size**: 60ml tube, suitable for multiple applications depending on hair length and thickness.
– **Permanent Formula**: Offers long-lasting color that can cover gray hair effectively.
– **Colorsmetique Technology**: Enriched with a blend of ingredients that help to protect and nourish the hair during the coloring process, resulting in shiny and healthy-looking hair.
– **Easy Application**: Designed for professional use, but can also be used at home with the right techniques.

### Usage Instructions:
1. **Preparation**: Conduct a patch test 48 hours before application to check for allergies.
2. **Mixing**: Combine the color cream with the developer (usually a 20 or 30 volume developer, depending on the desired lift).
3. **Application**: Apply the mixture evenly to dry, unwashed hair, starting from the roots and working through to the ends.
4. **Processing Time**: Allow the color to develop for the recommended time (usually around 30-40 minutes).
5. **Rinsing**: Rinse thoroughly with lukewarm water until the water runs clear, then follow with a color-safe shampoo and conditioner.

### Tips:
– For best results, follow the instructions provided with the product.
– Consider consulting a professional stylist if you are unsure about the application process or color choice.