The tiny mites that have sex on our faces have a problem
And if you're rushing to the bathroom, grabbing all the face wash you own and scrubbing every inch of your skin, you won't get very far - they live too deep in your skin to ever be washed out.
If it gives you some comfort, more than 90% of us are hosts to these mites and have provided them a home since birth as they're passed on during breastfeeding.
Dr Alejandra Perotti, from the University of Reading, co-authored the study and says we should be "grateful" to offer the mites a home and have such an intimate relationship with them.
"They're very tiny and cute. There's nothing to be concerned about having them. They clean our pores and keep them flat," she tells Radio 1 Newsbeat.
"Don't be worried. Be happy you have a small microscopic creature living with you, they don't do any damage."
The study shows just how close our relationship is with them, but also how the mites have the smallest number of genes in any insect, arachnid or crustacean.
