ヘアマニキュア ディレクションズヘアカラー LAVENDER

Do you have to bleach

How would you compare directions to manic panic?

I am looking for a blue that will stay in my white/grey hair--other brands have washed out in two washing--does this one work better???

Does it wash completely out, or does it just fade and you have to dye over it to get it out?