Punky Colours "Flamingo Pink" is the best. (just order it off the internet..like !0.95 per thingy.) It holds the color the longest. My kid has had pink hair for over six years, and because she's half a mexican, it's no easy feat stripping all the color and depositing bright pink and keeping it in there.
To be honest, Manic Panic never worked for SHIT, although their colors are gorgeous. It comes out in like two/three shampooings.
The only other brand I ever had decent luck with was Wella's Professional line...it kicked ass, but I couldn't find it anyplace w/o a professional license no.00
No matter what, when using that type of artificial color, you MUST strip ALL pigment from your hair first...in other words, BLEACH THE SHIT OUT OF IT!
Good luck and have fun!
