You don't.
I think you mean is it good for your hair, well no dying is good for your hair, but I doubt it's unsafe.
A purple shampoo will neutralize any unwanted brass (yellow/orange tones) from blonde hair.
Hey! I dont know how old this article is but i think i can help you out. The reason why is because the hair needs to be bleached then high and low lighted
Depends how bleached it is. If it's bleached out completely, no.
No because your hair is dead material that still have genetic data in them and also thc is stored in them. Dying your hair does not change your genetic traits in your hair and will not effect the thc stored.
That's a possibility. Especially if you're dying your roots. This gets rid of the natural oil your body provides that keeps your hair healthy.
It will cost you more than $200 to get your hair professionally bleached.
yes, but whatever colour you dye it will be lighter than on un-bleached hair
Gold bleached hair needs a medium ash blonde to tone it down.
Your hair could go ginger. but if you are bleaching it use high peroxide and leave in 5/10minutes longer than stated on the box. or if you dying back from bleached then use a colour two shades darker than the colour you want :D
You can, but i wouldnt recommend it. It doesnt completely get rid of the old color, and it fries your hair even with a hair protection kit.Hope i helped!
If your hair is bleached before being dyed or dyed CONSTANTLY (every month or so) then your hair will eventually become dry and not flexible. You'll need to use special shampoos and conditioners for colored hair in order to keep your hair healthy.