I've never had henna before, but this sounds logical.
Or maybe that will work?
You're talking about the henna in your hair right? Hair! HELP. :)
I would definitely talk to a professional about removal. However, stripping it may damage your hair too much for it to be able to handle a perm, whether it's a regular cold perm or a digital one. I'm not sure there's much else you can do besides cut it out and/or wait for it to grow out. Many stylists who have experience perming hair won't do it if it's already colored. I think your best bet would be to go to the salon where you'd get the perm done and discuss what to do with them.
