Color Oops Extra Strength hair Color Remover is formulated to remove the most difficult colors and color build-up from hair. It's so gentle that you can recolor your hair the same day. Innovative formula shrinks dye molecules, enabling you to wash them away. Not for use on unnatural colors such as Splat. Color Oops dissolves your latest color application, however your hair will ultimately be a chemically lightened color that allows for new/revised application of color. Bleach free, vegan and Cruelty Free.