Ah, Sephora—the hallowed halls of beauty heaven. Girls become women when they acquire their first Beauty Insider card. There are a few pieces of Sephora trivia that most beauty junkies already know. For example, you've likely heard that in Sephora terms, each store is called a stage and the employees are called cast members who wear not uniforms but costumes.

But even the most Sephora-obsessed consumers don't get an inside look at the company like the people who've worked there do. We have a certain fascination with Sephora cast members: Do they receive as many free products as we think they do? Are there any genius shopping tips sitting right under our noses? And how many samples is really too many?

We decided to do some in-depth investigating to find exclusive Sephora knowledge that only an insider would possess. To keep things objective, we spoke with five former employees of the company: Ariel Orellana, Kylie Dennison, Rebecca McDonald, Tiffany Colon, and Nathalie Nieves. Here are 15 of their genius insider secrets.

1. You Can Get a Free Mini Facial in Any Store

Orellana says Sephora's skincare section is often the quietest place in the store, so its attendees are always happy and available to demonstrate products on you.

"Skincare consultants are required to learn how to give skincare expresses, which are basically express facials on the floor, with cleanser, toner, treatment, and moisturizer," says Nieves. Simply pick whichever products you'd like to try, and ask for a skincare express. "It's a great way to try different products and give yourself (and your skin!) a quick pick-me-up," Nieves adds. Plus, it's free.

2. or a Free Hairstyling Sesh

The same thing goes for hairstyling. "Cast members are actually trained on different dry-styling hair trends every couple of months from brands like Living Proof and Drybar," says Orellana. "So you can stop in for a touch-up on your hair, as well as your skin and makeup."