Our different shades of MM Henna are achieved by combining two plants: Henna, which is naturally red by itself, and Indigo, a blue/black plant. By mixing these 2 plants in various ratios, different shades of hair dyes, ranging from pure red to black, can be achieved. The two bags in your MM Henna packet contain pre-portioned amounts of henna and indigo that result in the color displayed on the package. Since our henna and indigo bags are pre-portioned, no measuring is required. Simply use the entire package when mixing as per the instructions to get the intended color.