Porosity equalizer to balance out structural differences from roots to ends and to help neutralize metal ions on the hair surface. It helps creating uniform and even color results for all color services, without color shift or without affecting the color or lightener performance. The Keratin-Complex detects and fills in uneven spots for an overall equalized hair shaft and further strengthen the hair fiber. The MicroPur technology helps to neutralize impurities and metal ions and prevents the succeeding color from inequalities, that can lead to color fading or shifting.