Yes, you can bleach in steps, but why bother...unless you want to adjust to the shock of being plat from black...lol.
If you have virgin hair I would recommend getting some bleach at Sally Beauty supply with 20 vol. It may take up to three bleachings to get your hair to a nice shade in order to tone it. It needs to be bleached the color of the inside of a ripe banana color--pale yellow. Then you can choose a toner to get the color nice.
Hair can usually take three bleachings. Bleach will last on the hair and bleach the color out as long as it isn't dry for 90 min. After that rinse it off and start again with a new batch. Prior to bleaching strand test to see how long it's going to take to bleach. First you will need to apply the bleach to the ends and midshaft, last apply to the roots. If you don't do it this way you can get what is called hot roots...when the bleach makes the roots a lighter shade than the rest of the hair...If hubby wants blonde then get him to help you with this job...it's really going to take someone else to get the bleach applied evenly and thoroughly. If the bleach is not even, then you will get spots and have to rebleach those.
I wouldn't get a blue based bleach, personally, because you really cannot tell how light the hair is with those bleaches, as they tone while bleaching. Get a white bleach--on the scalp--and 20 vol. peroxide...STRAND TEST and time that strand test...you will likely have times close to that, not exact, but you'll get a good idea.
I think this is all I can think of please ask if you have more questions. Good luck. Oh, by the way if you only want to go to a medium blonde then you only have to bleach the hair to that shade of undertone and then tone, but plat can be done.
Blonde hair is expensive to upkeep and is very damagaing, especially to dark hair. You'll need good conditioners and to take good care of your hair.
Good luck, hope this helps, and let us know what you decide.
Rebekah |