Is there a REALLY temporary hair color that would wash out in a week or so and letme have my EXACT color back?

I have always wanted to see what I would look like blond but I love my hair color. It is really unique and there is no way to get it back with a bottle. I want to go blond for a week or so then get my EXACT hair color back. Is this possible?Is there a REALLY temporary hair color that would wash out in a week or so and letme have my EXACT color back?
Any temporary hair color (unless its one of those sprays) will change your color slightly. Nothing usually only lasts a week as well. There are a few that wash out in a month but nothing for a week. Sorry : ( You could always try one of those photoshops to see what it would look like or try a few wigs for fun.Is there a REALLY temporary hair color that would wash out in a week or so and letme have my EXACT color back?
not really because it puts to many chemicals in your hair and they don't exactly all come out at the right time. So, they stay in your hair to long and never come out all the way.

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