Redken ColorFusion Advanced Professional Permanent Cream Hair Color 2.1 oz 5Rv Redken ColorFusion Advanced Professional Permanent Cream Hair Color 5Rv gives a Red/Violet color to your hair. The innovative technology leaves hair fortified and smoother than before coloring, with long-lasting conditions and respect for hair's natural lipid balance. The color is a low ammonia option that is actually designed to strengthen your hair when using it.