I have just dyed my light brown hair blonde. It has gone a very bright yellow. I have tried to do it again but that did not work. Is there anything I can do now or will I have to dye it back to brown? Hope someone can help.

Goose this is the thing about boxed color they have a mixture aleady put together for someone's hair the thing is they don't know your hair level or what your trying to achieve so its almost impossible for it to look like the girl on the box. Your hair is a light brown color an your trying to make it blonde and you said it came out yellow it probably was a golden blonde color or some color in the golden family. I would recommend that you go to a color specialist also, you'll probably have to use some sort of ash color to neutralize the gold.