So I'm struggling with having coppery orange hair that is from bleaching out black dye. I definitely DO NOT want to go dark again, so I was looking at trying gentian violet to hopefully tone down some of the brassiness in my hair.

Is there anyone here who has experience with gentian violet? I'd be really grateful if you could share some tips with me!

I ordered it today, so it should be here sometime next week. I know to use only a small amount - currently, I'm saving up some hairballs from my brush to test it out before putting it on my hair.