Matrix Socolor Pre-Bonded Permanent Color 6N Dark Blonde Neutral 3.1 Ounce 90 Milliliters Socolor is a permanent hair dye that is simple to use, giving you the results you want. Premixed bases and self-regulating shades make your job easier. Socolor Beauty hair dyes provide your hair with long-lasting effects and are also suitable for covering grey hair. The protective ingredients also give your hair a rich shine. *This is a professional product and should be used only by a trained individual. The seller is not liable for any adverse outcome resulting from the use of this product.