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Dianna Mazzone / InStyle
August 26, 2016

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If you emptied our beach bag, you’d find dog-eared copies of Nicholas Sparks novels, endless tubes of SPF, and now—thanks to dermatologist S. Manjula Jegasothy of Miami Skin Institute—a rainbow’s worth of lip liner.

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Why? “The waxes in lip liner act as a physical barrier to the sun’s rays,” says Dr. Jegasothy. The trick is liner-specific since such formulas typically contain more—and denser—waxes than that of glosses or lipstick. To be sure your favorite liner fits the bill, take a peek at the ingredient list, says Dr. Jegasothy. “If wax—or a wax derivative like wax esther—is among the first five ingredients, then use the pencil to outline and fill-in lips." (For extra protection when in direct sunlight, Dr. Jegasothy also recommends layering on a clear, SPF-infused balm following your liner.)

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Scroll down to shop four of our favorite new beachside staples.

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