What kind of power plug is used in Ireland?
Is it the typical plug used in most of Europe? Or is it the British one?
(Could you attach or link to a photo so I can make sure?)
Check the electrical outlet website for a list of the electrical plug types for the whole world.
To be more specific, From Wikipedia:
This is how it looks (From Wikipedia):
Bath and shower rooms
As others have mentioned, it's the same as the UK.
Ireland & the UK are quite culturally close (and were the same country until 1922), so anything bought in the UK would have to work in Ireland. There are numerous 'high street' UK chains operating in Ireland selling the same merchandise.
If you use an adapter there is a trick for using several plugs(2 pins) with just one adapter. The third pin is just for "unlocking" socket so you can try to put in the adapter conversely and just plug in your two pin plug.
Edit: As pointed out by CMaster in the comments you are deliberately circumventing a safety feature this way. You should only do this if you know what you are doing and use it only with low power gadgets.
Edit: As pointed out by SztupY the third pin is not only for unlocking but for grounding. According to that you should only use this trick for gadgets that do not need to be grounded.
3 pin adapter
plug in conversely if possible
pluug in 2 pin plug
Important: be ware that this is an unsafe usage of power sockets.
(Pictures taken from http://irland.joerg-erdmann.de/adapter-irland)