Goldwell Colorance Acid is a semi-permanent hair dye formulated with acid technology for gentle and long-lasting color results. The shade 6RV Violet Rose delivers a vibrant violet-rose tone with subtle pink undertones, ideal for multidimensional coloring or refreshing existing hair color. This ammonia-free formula contains conditioning agents that maintain the hair's natural moisture balance while depositing intense, wash-resistant color. Each 120 ml tube provides enough product for medium-length hair applications. The semi-permanent nature means that the color gradually washes out over about 24-28 hair washes without leaving harsh regrowth lines, making it suitable for those seeking temporary color changes or wanting to enhance natural hair tones. The acid technology protects the hair structure during the coloring process and ensures even color distribution. Professional salon quality can be achieved with proper application techniques. The creamy consistency allows for easy mixing and application, and the formula is effective on both natural and previously colored hair. Color results may vary depending on the starting hair color and condition, with optimal results typically on light to medium blonde bases. Always perform a strand test 48 hours before full application to check for color compatibility and possible reactions. Store the product in a cool, dry place away from direct sunlight to maintain product integrity.