Q&A for How to Dye Hair Bright Red Under Black Hair

If your hair is naturally black, then yes. You can lift it up to 3 or 4 levels without bleaching with a high-lift red dye

Probably, but it probably won't happen in one day. You'll need to lighten it a few levels at a time, especially if it's dyed black, not natural.

Yes. Naturally brown hair can be dyed red in one step. If your hair is dyed brown you'll have to remove the brown pigment first (with bleach or a color remover) and then dye it red.

If your hair is naturally black then yes, absolutely. Depending on your desired level of vibrancy, you may need to bleach it first. If it's dyed black you may not be able to achieve red. You'll need to perform a strand test to see what's possible.

It's possible. You should keep your hair separated as you do the top and bottom layers.

The black dye job is the easy part. Do that and get it out of the way, then move on to the bleaching process.

Any grocery store sells bleach. But hair bleach will probably be best found at Sally's or another beauty store.

Yes, you can.

Yes, you can either dye it back to your natural color, or just let it grow out, though that will be a long process.

All it will do it become a lighter/faded red or if it's really faded, it becomes mostly black and a small bit of red.

It would not ruin it, although you would need to bleach the areas you wanted to dye due to the fact that you have black hair.