(Tests on 5 makeup products; mascara, blusher, foundation, lip gloss and lipstick, revealed that makeup is a breeding ground for some really nasty stuff: 6 different types of bacteria were found, including the deadly meningitis bacteria Enterococcus Faecalis/Faecium, and bacteria that can cause acne and even septicaemia, a severe blood infection that can lead to organ failure and death.
The research was funded by online beauty retailer http://www.escentual.com. I think I'll just go and check my makeup bag now.)