How to brighten red hair color

Red hair dye fades fast and there is no way to brighten the colour without stripping and using another colour.

That first answer was ridiculous. Of course there are products you can use to brighten red hair. Try Goldwell Colorance Soft Color Foam. It is a temporary color product that lasts through about 6 shampoos and is very easy to use. The colors that have "K" or "R" in the description are red tones.

You can easily find this product from a variety of sellers on Amazon.com, Ebay, or many other sites. Google is your friend :)