WHAT TO DO
Experts agree the risk of contracting an infection from using samples at the makeup counter is small. Still, it can't hurt to keep cleanliness in mind when trying products. Here's how:
Hit the makeup counter during the week, when it's less busy and, odds are, fewer people have used the testers.
Wash your hands before and after testing a product.
Don't test products on your eyes or lips.
Ask for a single-use applicator with which to apply a product, or better yet, ask the makeup artists behind the counter to apply cosmetics for you. They are trained in hygiene procedures.
Some companies keep single-use testers behind the counter. Ask for them.
Ask about the makeup company's return policy. That way, you can try the makeup at home, using a fresh package, and bring it back if you're not happy with it.