Well, I know people who have done it fine.
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I bet within the first 3 washes it had faded dramatically
Not as far as I know.
I actually dyed my hair blonde and it went ginger so I dyed it dark brown the same day, that was absolutely fine.
I've dyed my hair blond, then purple the same day in the same time actually, over each other, blond then purple. And my hair was fine?
I've dyed blond, then it went a ugly color so i dyed it brown, then a week later i added blue. over the same area nad my hair was still fine?
My hair doesn't get damaged, even hairdressers agree (: So that's not always true.
I dyed my hair about a week ago at hairdressers
They bleeched it first, because with all shades of red if you dye it blonde first then put it on, it'll be more prominent and bright.
don't know about other colours,
but obviously purple would be brighter on brown hair than blonde hair because the hair would have more dye on the blonde hair meaning it'd go darker.
But yeah
my hair was bleeched then red put on, i've washed it everyday twice, then condition
not faded a bit.
kinda wishing it was though, cause sometimes it looks pink it went so bright :P
My purple looks pink sometimes when its starting to fade, its well annoying lol.
Well it depends on how well conditioned your hair is, then. That's what I was trying to get across.
Well yeah, i guess what hair products you use and such :]
IF you want a bright colour on it, bleach it first then do it.
The colour will be brighter, and won't fade as quickly!
GREEEN. Hardcore.