The number of options when it comes to Las Vegas facial services is almost as dizzying as the lights of the Strip—but all are designed to keep skin glowing, even after a wild night. Most Las Vegas hotels are also home to luxury spas, including the DoubleTree Tropicana Las Vegas, where visitors can relax across 10,000 square feet of pamper zones, including a steam room to sweat and detox. At Mandalay Bay, guests can sleep, gamble, eat, and even dive with sharks—or just chill in the spa, where facials claim to "defy the laws of aging."

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