After time is up, add a little water to your hair and lather the color mixture through it like a shampoo. Rinse your hair thoroughly in tepid water until the rinse water runs clear and absolutely no color mixture remains in the hair. If your kit contained a conditioner, apply it now. Leave it on for two minutes and rinse thoroughly in tepid water. You may use a deep conditioning treatment instead of the boxed kit conditioner.
Some women prefer to shampoo their hair after rinsing out the color and before conditioning.
I don't recommend this. To help preserve the vibrancy of your color, subsequent shampooing and conditioning should be done using cool water. Hot water will strip color from your hair. This is especially true for reds, which can fade or become brassy in a matter of a week to ten days. By using the above method, I get salon quality results with my hair coloring.