Tried to dye my hair darker..please help!

When you redye your previously dyed hair, the dye builds up on the ends and the roots look lighter.

What you need to do is remove the color with Colorfix, which can be purchased at Sally's. I also recommend that you buy a protein filler to counteract the porosity of your damaged hair. This will allow the dye to take normally. You'll also want to get demipermanent color while you're there. I suggest a color a couple of shades lighter than what you're looking for. You can always go darker later, much easier than taking it back if it's too dark.

Pick up a tint brush. From now on you will be touching up only your roots and never using permanent color on any hair more than once.

This is going to be a big, scary project. You might want to have a professional do it.

I suggest you get a wig for Saturday.

Semipermanent dyes contain the same lighteners that permanent ones do, just in lesser quantities to help fix the dye to the hair shaft. So if you redye repeatedly your hair may become porous, just as if you had used permanent dyes, exactly as described.

Most home remedies for hair color removal are extremely harsh on the hair and very limited in their effectiveness, so I don't recommend them. Considering how dark the dye was when the post was written, it's unlikely there's anything someone could do at home to bring it up where she wants. Except, of course, that the color on the roots will probably become lighter, as they are less porous.

There is a real possibility that she could permanently damage her hair without significantly fading the dye.

I stand by my answer. In fact, now it's too late to have a pro fix it for Saturday. The only solution right now is wig shopping.