In the United States, it is the Federal Communications Commission, or FCC. And its jurisdiction doesn't stop at radio, but also extends to television, the Internet and really any form of communication extended over air or wire.
Wash your hair with a gentle moisturizing shampoo made for chemically treated hair on day three. These shampoos will have natural, soothing ingredients for those stressed tresses after a perm. Use gentle massaging motions on the hair and rinse thoroughly. Only use warm water when washing your perm, never hot.
I rinsed my hair in the shower and applied this leave-in conditioner that my stylist recommended at least three times in between my perm and my shampoo. So, yes, you can get your hair wet in the first 24 hours and it won't ruin the perm, but I would advise against using conditioner.