Matrix Socolor Beauty Cream Developer 6% 20 Volume SCB CREAM OXIDANT 6%/20 VOL 1L 33.8 Ounce 1000 Milliliters This color activator is used with matching color line of hair dye and is simple to use. *This is a professional product and should be used only by a trained individual. Seller is not liable for any adverse outcome resulting from use of this product.