You make a colour rinse with a 1: 1 mixing ratio with the colour from KIS. Then let it work for 20 minutes. Tech Tips: Mix 1 part DMI lotion with 1 part 8FG if you want to bring lighter colored hair or bleached hair back to a shade 5 or higher. Leave the pre-pigmentation on for 20 minutes, then rinse well and apply the colour at 3%