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Refy Glow and Sculpt Face Serum Primer with Niacinamide ($34)

"Primer is great for hydrating skin and allows your makeup to last longer. This one from Refy is really cool because you roll it on and you're getting contouring and primer at the same time," Love explains. This serum is suitable for all skin types, and is especially useful if you've been fighting dryness and redness. It contains niacinamide, which helps to visibly brighten skin and reduce blemishes, and glycerin, which boosts hydration, according to the brand.