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ESC, Advent Calendar Day 1

The countdown to the holidays begins—and with it, a flurry of gift guides, wish lists and must-haves. Should you feel inundated by the plethora of products, look no further than E! Style Collective's 24 Days of Holiday Essentials. Every day until Christmas, our Hollywood insiders—a celeb hairstylist, makeup artist, stylist or influencer—will share one item he or she is coveting. Because who better to give a recommendation than those working in the glamorous trenches? 

First up on the docket: Zanna Roberts Rassi—you may know her as Marie Claire's senior fashion editor, an E! News fashion correspondent or a Project Runway judge, but for the holidays, the style expert is all about her skin game, specifically with Sunday Riley Luna Sleeping Night Oil.

ESC, Advent Calendar Day 1

"It's oddly blue on application (which makes me smile) and works wonders on exhausted skin," said Zanna. "It's December—what do you expect?"

The formula comes in an ampoule-like vial and contains retinoid oil, a super-charged ingredient that helps to reduce fine lines and pores and promotes skin elasticity. The cool hue is due to the blue tansy (a fine wine of essential oils, so to speak) mixed with chamomile, cold pressed avocado and other calming ingredients. Use a few drops before bed and wake up to extra-restored-looking skin.

Sunday Riley Luna Sleeping Night Oil, $105