Im mostly looking for something for black blown or purple hair
Try a henna. It's a natural way of dying your hairand actually moisturizes it. It comes from a plant. You will find it in a powder. If you add coffee to it it gives you a blue black. I used to henna my hair blue black all the time. I would leave it on overnight.
I actually found some at a drug store haha, just got to keep an eye out. If you have a store called Lush in the area, they definitely have it. I usually use theirs.
How do you find or make henna