Red hair dye?

I use Lo'real hicolor - red and mix it with 30 volume developer and it's a VERY vibrant red and you can use it with no bleaching involved. I'm warning you it will be a very bright Ariel the little mermaid red, and if you don't want it that bright then just keep washing your extensions and the intensity of the red will wash out into a really pretty red! :)

This will work perfectly if your extensions are still red, but if you've already bleached them then I would just be very careful with washing them because the parts that used to be blonde in my hair have already faded.

Just to give you an example here's what it looks like now, you can tell the difference from where my hair was red before I dyed it and where it was blonde before I dyed it:

http://instagram.com/p/o4CaB4incX/

I hope this helped! :)

Leave it for at least a week, as your hair can only take so much damage at a time. Do a deep conditioning treatment which will help your hair get back into a suitable state for dyeing it again.