My white hair (I have a mix of dark brown and white-all natural). I have tried all kinds of shampoo for white hair, they don't take out the yellow for me. My hairdresser tried products to lift out the minerals and all that did was make it worse. What can I do to get the yellow out? HELP!

Do you smoke by any chance?
My dad has white hair and he's got a yellowy tinge to it due to smoking. I used a detox shampoo on it (it came in a sachet) and left it on for 10-20 minutes. Once I washed it off his hair was a clean white colour :)