Matrix Socolor Pre-Bonded 6N Permanent Color Dark Blonde Neutral 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 give your hair 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. Seller is not liable for any adverse outcome resulting from the use of this product.