You might not know it, but there are very likely to be microscopic mites living on your face. Right now. They're microscopic, so you won’t see them if you look in the mirror. For most of us, these mites are totally harmless and just live off the natural oils produced by our skin. However, these mites have also been implicated in the skin condition rosacea, which potentially affects as many as 1 in 10 people. We spoke to Fred McMahon, a PhD student at Maynooth University, about the mites and how the bacteria within them may be at the root of rosacea.

Image credit: Karl Udo on Wikimedia Commons, via Free Art License 1.3