Color Oops Developlus Color Oops Color Remover (extra Strength)

Does this work on old dye? My mom is letting her gray come in and it's like gray umbre lol. Can she use this to remove the rest of the color?

I have natural dark hair and i am now a bleached blonde. I put a semi permanent direct dye over the blonde. Will this make me blonde again?

Why are ends dark and roots red?

what are the ingredients?