I dyed my hair with "darkest brown" about 3 hours ago, and it finally dried and it came out wayyy too dark. I always use this color, but I guess I left it on too long. Now my hair is darker than my extensions. If I wash it now, will it fade?

Washing your hair with cheap, Walmart volumizing shampoos will help fade your color. Also, being in the sun a lot will help it fade. Funny, I'm having the same problem, but opposite! I colored my hair dark and my extensions are nice n' dark and my natural hair is too light lol... so I know how you feel lol!