They're generally considered harmless, but they may be implicated in acne.'Īlso, invisible to the naked eye, is 'bacteria such as staphylococcus, streptococcus and e-coli, as well as fungi,' says Stefanie. 'Most of us have these tiny creatures, about a third of a millimetre long, residing at the base of our eyelashes and nose hairs, living off old skin cells and sebum. 'Under the microscope, you may see the remains of mites on your brushes,' reveals Lynne.
