A very simple homemade way to discolor your hair correctly is to use a mixture of hydrogen peroxide of 20 volumes with a pack of discolored powder that is bought in pharmacies or drugstores.
To avoid risk, you should test the mixture by applying it on a small area of the skin and wait 15 minutes if you do not notice any changes, it is okay and it can pass through the body, except the face and hands.
Next, put on plastic gloves and wipe the mixture throughout the area you want to discolor and leave it on for up to 30 minutes. Then it is best to take a bath to completely remove the bleach and pass a moisturizing cream all over the body.