How to Bleach Dyed Brown Hair

Bleaching hair that you have already dyed brown can be more complicated than bleaching your natural hair color. Using a harsh chemical like bleach to lighten your hair can damage it, and applying bleach over hair that has already been chemically treated will only add to that risk. Still, bleach is a straightforward way of removing the color from your hair if you get tired of your brown hair and want to dye over it, or if you simply want to lighten the color.

Prepare the bleach solution in the hair removal kit according to package directions. Wear the latex gloves to protect your hands.

Divide your hair into several sections and pin up all but one of the sections so they're out of the way. Using the applicator brush provided with the kit, apply the bleach mixture to one section of hair from the root to the ends. Lift the hair to apply bleach evenly to both sides, and pin it out of the way when you're done.

Unpin the next section of hair and apply bleach mixture to the top and underside of the hair as before, working from the root to the ends. Repeat the procedure with remaining sections of hair.

Cover your hair with the shower cap to prevent a mess or accidental contact with the bleach. Let the bleach sit on your hair for 40 minutes. Check the color. If your hair is white, the bleach is ready to come off. If not, let it sit for another 10 minutes.

Rinse the bleach out with warm water. After rinsing, wash your hair with shampoo and conditioner.

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