I dyed my hair a different color than I usually do yesterday and hate the color. How soon can I dye it again?

You can generally re-dye within 24 hours though it's best to wash it 2 to 3 times first. Just be sure you don't scrub your scalp as it can become sensitive and burn during the next batch of coloring.
Good Luck!

If your hair and scalp is in good condition, you can re-color your hair right away.