How long do you have to wait to condition hair after a perm?

Wash your hair before you perm, but don't use conditioner. Damp hair is easier to wrap around perm rollers, and it's going to be a while before you can re-wash your hair after the perm!After the perm is finished, do not wash your hair for 48 hours, as the chemical bonds are still setting. If you wash your hair too early, it may effect the perm results. I'd also suggest getting your hair trimmed after a perm.