Question- How can I undo it, please help. It's HORRIBLE. I want to keep it as less damaged as possible (no straight perms) but I got it done Wednesday and I need it gone as soon as possible

what you do is get a perm have them put conditioner in the perm solution run that through your hair, make sure it is really straight when you do that, leave it on for like 5 min, then rinse it out, and then neutralize your hair for 5 min after, then rinse and the curl will be gone, this will only work on hair that has been permed, it will not work on naturally curly hair on natural curly hair you have to use a straighter. or you can shampoo with prell a couple of times that will help straighten it out some, it will help loosen the curl but will not make it totally straight again. We have actually gotten a test curl with Prell we were bored one day in the salon and tried it.

Go to a Professional Hair Stylist.