Which blonde hair color is the best at lifting brown demi-permanent color?

I colored my hair dark brown 5 months ago and my hair is looks like a light brown now with a red or orange tint. My natural color is a light ash blonde. I can't afford to go to a salon.Which blonde hair color is the best at lifting brown demi-permanent color?
since you have color on your hair, color wont lift what you have. you have to bleach it to get it back to a blonde color. and since your having a red orange tint to your hair you might want to use a puprle or blue toner on your hair to help correct that brassyness