Gorgeous vibrant purple hair sent in by Jacki, here is how she achieved this color:
heya! Jacki, here! This is my purple hair that I used to have.
I have dark brown hair, so I lightened it to a really crappily dirty blonde color with a simple frost kit,and left it in for an hour.
I did two coats of Manic Panic’s “Purple Haze” leaving it in for an hour each time. Two coats were really necessary because the first time it came out sort of pink.