"How many of you that said no to swapping used makeup still use 'tester' products in the store? How is that any different?" - Stacey on Facebook

Experts say: As I was delving through the digital pages of Makeup Exchange, I came to the same realization as this Facebook fan: Sampling in Sephora is an unofficial, real-life version of the forum -- we're trusting complete strangers to not touch, sneeze or lick those tempting open samples, or to not test a new lipstick when they've got the plague. Disposable Q-tips, sample wands and sample brushes may help, but there's still a risk: Store employees don't vigilantly disinfect after each and every customer, not everyone shares the same concerns about exposure to bacteria (but hopefully more will be, after reading this) ... you might as well order a lipstick that's been used 12 times by a random Redditor.

The verdict: This doesn't mean you have to swear off makeup sampling for good. Unless you're looking for a freebie makeover before your GNO, Hammer reminds us of the main goal for testing out the product: to see if it applies well, feels nice, and matches your coloration. Luckily, there is so much more to you than your face. "Instead of applying the products directly to your eyes or lips, try them out the way we [cosmetic chemists] do: Use a sample wand and apply the products to the back of your hand so you spare your face any possible harm." The next time you're at the makeup counter or at Sephora, use these expert tips to find the perfect color. Then, simply wash the products off when you're done, and you'll leave the store with your eyesight and peace of mind.