Color Oops TM Extra Strength is the safest and most effective way to reverse an undesirable hair color application in just 20 minutes! Color Oops corrects your hair color by shrinking the dye molecules, allowing you to simply wash them away. Our unique formula is bleach-free and ammonia-free; Color Oops will not have the damaging effects of bleach or ammonia-based products. Color Oops Extra Strength is formulated to remove the most difficult colors and color build-up. Color Oops is so gentle that you can re-color your hair the same day. Color Oops Extra Strength removes artificial color from hair that has become too dark. For instance: if your hair was blonde and you applied a brown color that is too dark, Color Oops can be used to get your hair back to a blonde shade. Color Oops can also be used to remove artificial color from hair that was lightened but became off-tone. For instance: if you have naturally brown hair and used an ash blonde color and your hair is now blonde with a green tint, Color Oops will remove the green tint, but your hair will remain blonde.