go to a department store and buy one for europe and one for britain.. ( if ur going there, too)
( in austrlia u buy a three pack..one for the aforementioned places and one for the states)
u plug em in and then stick in ur battery charger or whathaveyou …
i havent been anywhere that u cant use them
id not bring shaving tools or hairdryers…i usually only take my phone that needs charging and this time a camera battery .

2 issues:
plugs that fit
correct voltage

Check the electric info sticker on your items for the acceptable voltage range. If it says something like "110-220V" then it would work, for example, in both Europe (220V) and North America (110V), and you would only need a plug adaptor so the prongs fit. If it does not show a range at or near 220V as acceptable for that appliance, then you will need to use a step-down tranformer which goes into the 220V power source in Europe, and transforms to 110V.

Camera chargers usually don’t need a converter — check the "inputs" listed on the charger (usually molded into the plastic or on a permanent label. If it lists 220 volts (like "inputs 110 volt to 220 volt&quot you will only need an adapter plug (one for UK and Ireland and a different one for the rest of Europe).

A basic converter from the discount store should (check out Don’s advice for more info)handle your shaver. I would get a converter that comes with extra adapter plugs and that has a fuse in it (take extra fuses) so you blow the fuse as opposed to your shaver if something goes wrong. Anything electrical is a bit of a crap shoot. The fine print with the converter will clearly state that there’s no guarantee that it will work or that it won’t fry your stuff or itself. Your shaver will probably run slower. Most simple electric motors either spin or move back and forth based on the "cycles" in the alternating electric current. Power in Europe is 50 cycles per minute as opposed to 60 in the US. The converter only deals with voltage, not cycles.

If all you need is the plug converter, a combo model with plugs for Europe/Asia/Africa/NA should run about $9-10 at Target or some such store. Voltage converters are much more expensive, probably about $30.