Over €1 million has been raised for the Irish Cancer Society off the back of the #nomakeupselfie phenomenon, where women take a photo of themselves sans make-up and then send a donation to the charity.
Men have got involved too with their #makeupselfies, whereupon they do the opposite.
And some of Newstalk's presenters have jumped on the bandwagon too! So get donating either Pink or Daff to 50300...
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And Newstalk's political correspondent Páraic Gallagher is going one step further and getting his make-up professionally done in order to raise more funds. Head here for more info.