Be honest - how often do you clean your make-up brushes?
We all know that we should be cleaning them after every use, but if you're doing your make-up in a rush before you head out, it's easy to forget and let them sit for several days - or weeks - before they're cleaned.
But according to new research conducted by Spectrum Collections with expert opinion from cosmetic scientist Carly Musleh, not cleaning your make-up brushes could be leaving them with more bacteria than the average toilet seat.
