it should have a switch somewhere to change the voltage. In this case, any old high current capable adapter should do. If there's no switch, it could automatically sense the voltage and deal with it, although this might not be something to be trusted.

European frequency is 50 Hz, but rarely does that cause a problem with modern motors. Besides, it's possible that the motor is DC and then it makes no difference at all because the dryer converts it internally.

The instruction book (if you still have it) or maybe some online instructions or FAQs or a call to the manufacturer, will have any other info you need.

Plan B might be to buy one locally and gift it to the host family when leaving.

on edit...

The other two gadgets are 120 only, so a voltage reduction adapter will be needed. If it's big enough it could also power the hair dryer on 120v but the ones with that kind of wattage cost bigger bucks.

There is a voltage switch on the blow dryer but it seems unclear as to how it operates. We will call Conair about that in the morning. I copied all of your advice and will take it with me to Rradio Shack.
Many thanks!

the French family just might have this stuff already-- you can often buy US appliances at half the European price, and many visitors here have "shopping lists".

Anyway-- Paris, eh? Your sister, daughter, niece, or whatever should have a fantastic time. I loved Paris many years ago when I was there, and still enjoy European vacations (cheaper ones, though). Hope she has time to see the countryside, other wonderful (and, yeah, friendlier) places. And maybe a few other countries a couple of hours' bus or train ride away.

If I were hosting foreign students, I think I'd get the necessary items to ensure that my electrical system remained safe. But we did go ahead and pick up a few things, just in case. This will be her second visit to Paris but the first one lasted only a few days. She may get the chance to take some great trips around France and even to another country or two.

Maybe it's still around here somewhere.

Even the hair dryer.

Really.

If she's staying in Paris she's not going to need all those things.

And if she leaves them home she'll have more room to bring back clothes and souvenirs.