Hair bleaching damages the hair, so this must be followed to reduce the damage. Don't wash hair on the same day of bleaching, apply bleach to the ends of the hair first, because the roots lighten faster than the ends of the hair, if the hair is of a darker colour, bleaching is done more than once but allow a day or two between bleaching, after bleaching treatment of the hair is important and animal protein conditioners are added to soften hair after bleaching.
Attribution: Straight Talk Foundation