How long should I wait before I use Born Blonde Maxi on freshly dyed brown hair?

About two weeks ago I dyed my hair this color: http://i73.photobucket.com/albums/i237/m...

I'd like to use this product on it just to put some blonde parts in: http://i73.photobucket.com/albums/i237/m...

And yes, it actually is a bleach. It comes with powder and everything.

"The most blonde you could be, no matter how dark your starting color. You'll get maximum all-over lightening閳ユ攨ven for the darkest hair閳ユ攰n one easy step. For use on dark blonde to black hair."

My sister used Born Blonde Ultra Blue on her dirty-blonde/ brown hair, and it bleached it nicely.

I want it to look like this: http://i73.photobucket.com/albums/i237/m...

or similar to it.

I'm aware that the blonde in their hair might be extensions and I'm aware this product will most likely kill my hair, but It's no problem to me.

So, how long should I wait before I put Born Blonde Maxi in it?

Also, if anyone has used this product, how was it?

Thanks. :)

How long should I wait before I use Born Blonde Maxi on freshly dyed brown hair?

Unless you want to look like Lucille Ball, I highly recommend going to a SALON.