Depends on your natural color and if you're going to do it in steps. Dark hair may takes weeks, in steps and light hair colors may only take once.
When you bleach your hair, you are stripping all color pigment from your hair. You will need to wait for new hair to grow back for your hair to return to normal.
Around 5 to 9 hours
No chlorine is bleach.
varies from original hair color shade if hair was died before and different bleaching techniques
It depends on what type of hair you have. soft, straight take about 45 mins- 1 hour. dirty and greasy take twice as long
Yes you can and because your hair is light it won't take too long for your hair to change colour.
long hair
bleach
no, it won't bleach your hair but it will dry it out!
You can leave bleach on the hair for up to an hour. After this it will not work. You have to make a fresh batch. The more time that the bleach is out in the air the less time you have to put it on the hair. The ends are dark because there is more of a build up of colour there. You will have to do this on a few separate occasions. Because your hair is black the bleach will take longer to take the colour out. Black changes to red, the orange then blonde, it does take longer to get black out.
It is practically impossible. You have to have roots to bleach your hair and root on hair of at least a inch or more to safely bleach them. You don't want bleach directly on your scalp.
3hours