Courteney Cox's Must Haves, From a $300 Cream to a $9 Mascara

Much like her approach to home decor and fashion, Cox is a minimalist when it comes to beauty. She doesn't wear much makeup, just a little tinted moisturizer and concealer if she feels like she needs it. "But mascara is really important," she says. "It changes everything. I curl my eyelashes and I wear mascara regardless of what I'm doing." She was briefly tempted to call out Fritos as her affordable must have — it's her absolute favorite snack — but alas, her doctor told her to cut back.

Her top pick is the L'Oréal Paris Voluminous Mascara ($9). That, plus blush, and she's ready for her day.

Pro Tip: A fresh tube of mascara can create the most clumps due to the wetness of the formula. If you snag yourself a new tube, it's best to wipe the wand with a little tissue paper before first use or have an eyelash comb handy.