Review (5/5): Vibrant, long lasting and you DON'T have to bleach your hair beforehand
Wow, this is awesome stuff. I ordered Atomic Pink and my hair stylist laid it over my medium brown hair (panels on my bottom hair, my top is light blonde) and did not even need to lift any of the brown out of my hair. Here I am, 2 months later and the color is still vibrant. It's great because since she didn't need to bleach my hair it is still shiny and healthy.
If you have lighter hair it can still bleed into your blonde, but my personal results have just ended in looking like a cute pink melt. Make sure that you rinse will cool water and only wash your scalp, not the treated hair directly.
This is superior to products my stylist has purchased in the beauty supply stores. When I am ready to be done with the color she told me that it is actually going to be more of a process to gradually remove the pink than she thought. Normally it fades so quickly that they never have to do a gradual process to lift it out.
That's how much staying power this color has (Given you treat it appropriately.) Given the quality of it, I can't imagine it's very forgiving to mistakes. I would not trust myself it self-color, but that's just me.