Need Help Hiding Ugly Bleached Streak

I have a large wide bleached white streak in my hair that resulted from frosting my hair through a cap.  I think the hole in the cap tore and too much hair got pulled through it.  My hair is normally medium brown and this white stripe is too obvious and looks ridiculous amoung the other frosted highlights.  It's the first thing someone notices when they look at my hair. 

To correct this problem, I tried using a semipermanent formula which was Loreal Colorspa in "Auburn".  The color is described as the lightest warm brown.  I put it in all of my hair.  When I was done, the stripe was concealed nicely. 

Five days later the bleached streak is very noticeable again and the semipermanent coloring is almost gone.  I want the huge bleached streak gone for good.  How can I do this?  The frosting caused alot of damage to my hair.  I wasn't paying attention to the time and left the stuff on for one hour.  Any help would be greatly appreciated.  Thanks.


Edited by laurie_lu

Thanks for the quick reply.  Do you think I can just apply the permanent dye to the streak only without getting it on the rest of my hair?  If so, how would I protect the surrounding hair?  I've heard horror stories of bleached white hair turning blue or green when color is added.  Is there a particular color I should avoid to prevent that from happening?  Sorry for all the questions.

Kelly, it's about one inch above the top of my shoulders but the stripe is on the bang/side where it is a bit shorter.

It must also be noted that bleached hair does not hold color as well as non bleached hair, so eventually you may need to re color it again.

If you use a protein filler on your hair it will significantly reduce the
porousness of your hair and therefor hold color much longer - it's
bleaching that causes hair to be porous.