So, my hair was a nice white-ish grey color. And now it's gross yellow-ish grey color. I've been using the shit out of purple conditioner and shampoo BUT THIS SHIT KEEPS TURNING YELLOW. Instead of giving up and realizing that my natural color is black and I'm sure as shit never going to be able to have white hair, at least for very long, I want to explore other options.

Advice from any of you bottle blondes out there? Don't tell me to go to a professional. I have a mild phobia of hairdressers because of the horrible hair cuts they've given me over the years. Do bleach baths work? What toner do you use?