What should I do to get black hair light blonde?

Bleach it?

Bleach it?

Will it ruin it?

will it ruin it?

Bleach isn't great for your hair. It will make it dry and brittle. Also, if your already using hair color to get your hair black, you may not become blonde when you bleach. The bleach could react with the dye you're already using and you could end up with green hair, or worse.

But, the only way to go from black to blonde is bleach. Personally, I wouldn't do this myself. I'd go to a hair salon.