Bleaching is a process that removes color pigment from the hair gradually in order to lighten it. During the process, the hair progresses through different color stages including red, red-gold, orange, gold, yellow and pale yellow. Pale yellow is usually the desired color, but the exact shade often needs a little tweaking. This is where toner comes in. Toner is a permanent, low-peroxide color that changes the tone, not the shade, of hair color. While the results of most toner applications turn out beautifully, there is a chance that the color will "grab" (turn dark or absorb the base color). When this happens, the toner must be removed or lightened using a soap cap.
Put on the gloves, and mix equal parts of the developer and lightening powder in the color bowl. Add 2 ounces of shampoo to the mixture. Blend thoroughly using the color brush as a mixing tool.
Apply a liberal amount of the mixture to the stained portions of your hair, using the color brush as an applicator. Work the mixture into your hair using your hands and fingers.
Wait 10 minutes. Check the color by rubbing a section clean with a damp towel. If the color is desirable, proceed to the next step. If not, reapply the mixture and wait an additional 5 minutes. Continue checking every 5 minutes until the color is desirable.
Rinse your hair with lukewarm water until the water runs clear. Shampoo to remove any leftover residue. Rinse. Apply a liberal amount of conditioner, wait five minutes and rinse thoroughly. Towel-dry, then style as usual.