If your going to do yours at home I hope you have better luck than I did.....I wanted to see if I could do it but mine went red, mind you the box was blond.....I wore a do-rag on my head until I could get in and have it corrected.....
I don't know what my sister did but her hair actually went
green..

She still plays around with home dyes.....but I won't touch them...