First, divide your hair into sections and fasten them with clips. In a 1:1.5 ratio, combine developer and Matrix SoColor. To ensure even coverage, apply the mixture to each section using a hair dye brush while wearing gloves. After keeping it for 35 to 45 minutes, give it a thorough water rinse to ensure bright, durable color. 2. How are you utilizing Matrix's SoColor? First, divide your hair into sections and fasten them with clips. In a 1:1.5 ratio, combine developer and Matrix SoColor. To ensure even coverage, apply the mixture to each section using a hair dye brush while wearing gloves. After keeping it for 35 to 45 minutes, give it a thorough water rinse to ensure bright, durable color. 3. How is SoColor mixed? Combine the developer and Matrix SoColor hair color.