only do the new-growth, unless you need to refresh your ends/shaft. if you do need refreshing, only apply color to the new-growth, and save the leftover. once the processing is almost finished, mix a little shampoo into the bottle of color, and apply to the whole head, from the ends up. let that process for 5-10mins, and rinse until the water runs clear. then shampoo twice.
at 4:58 PM on Apr. 22, 2011