I already have blonde highlights in my hair which look amazing(not to be cocky). But I decided that putting temporary dye in my hair would be a good idea. So I dyed the bottom half of my hair blue not a good idea! I need a way to get this stuff out with out hurting my blonde please help!

If the dye is temporary, then keep washing, it will come out. Use hot water and wash often. The hot water will open the cuticles and the color molecules can then be released. Avoid any chemical fixes. This will be a disaster for your bleached hair. Try using prell shampoo to help fade out the color, or any kind of dandruff shampoo. Good luck.