How do I dye my hair brown when I have bleach blonde streaks in my hair?

the problem with bleach is that it changes the hair from the inside out. She should have dyed it, then toned it but it's too late for that. The high lights will most likely always show through, that is until that hair is completely grown out. If i were you i would get the most expensive box color you can find with no ammonia. I know you will want to go for the one that is 5$, but the truth is that will make your hair even worse and there will be no fixing it once you've done the damage. You will probably have to dye it every 1-2 months, but the ammonia wont hurt your hair as much. Go darker than you want, because the bleach has stripped your color all the way into each shaft. Darker is better and will hide the blond much better. Also, the no ammonia will let you grow out your hair as soon as the blond has grown out. The fact that your hair grows fast says that you have really healthy hair. Try to keep it that way. Keep your hair dryer on a cool setting, along with your curling iron/straightener. Even go days with out using either of those at all. Lastly NEVER let your cousin touch your hair again, lol at least until she get's better at it.

Good luck!

maybe just dye the streak twice? i had light brown hair with a blonde streak and i dyed my hair dark brown....the streak was a bit lighter so i dyed it again the next day and it worked out :)

try applying 'Henna', the natural brown color with no cosmetic effects.I usually apply it on my hair and then wait for o1-2 hours and then you have beautiful brown hair

i think you should dye it your hair color but it all depends how your skin color looks and your face shape....but if she doesnt come back to dye it i recommend you to dye it ..