Can someone recommend a good vivid red hair dye?

Something like in the following two pictures:





http://whi.s3.leg.entries.lg1x8.simplecdn.net/20090301212949.jpg


http://22.media.tumblr.com/tumblr_krbgf9R0qG1qzmzevo1_500.jpg





Demi permanent would be a plus, but permanent is alright too. :) Thanks in advance.Can someone recommend a good vivid red hair dye?
The absolute BEST brand of bright hair dyes is ChromaSilk Vivids. These totally unique semi-permanent dyes are made using keratin amino acids- so they actually create artificial pigment cells, instead of just sitting on top of your hair. Technically its a salon-only brand, but its worth doing some digging to get your hands on it. Try talking to people at your local hair salon or cosmetology school, asking any friends who are in school for doing hair, or possibly Ebay. The color is so vibrant, and it doesn't fade out the moment you get it wet. It only takes 15 minutes, its a 1-step dye, and if you decide to bleach it to change your color, it comes out as easily as natural pigment. I used dark purple in this dye, and when I put bleach on it, it lightened to platinum in 3 minutes.