At each store, investigators found nasty bugs lurking on the makeup samples.
Testers at each store were swabbed, and those swabs were sent to a laboratory to be analyzed. In each case, samples tested positive for harmful bacteria like E. Coli and staph, which causes dangerous infections.
Multiple samples also tested positive for Kebsiella pneumoniae, which is usually expelled with feces. "You could literally be applying and smearing someone else's fecal matter directly onto your lips," dermatologist Dr. Whitney Bowe explains.
Of the eight samples from Sephora, four tested positive for some kind of bacteria. Macy's and Ulta also had samples test positive for viruses like E. Coli, staph, and Klebsiella.
Experts warn that if you do use makeup testers, you should rub them on the top of your hand. Your eyes and lips are much more vulnerable to diseases.
Also, consider buying a product and trying it at home. Many stores will let you return the product if you're not satisfied.
Share this story to warn other women about makeup samples!