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3. Face: Serum
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Best for dry skin: Elizabeth Arden Advanced Ceramide Capsules Daily Youth Restoring Serum
Show your skin some TLC with one of these small but mighty capsules, which deliver a skin-strengthening blend of ceramides, fatty acids, and cholesterol to help retain moisture.
$98; ElizabethArden.com

Best for oily skin: Clinique Fresh Pressed Daily Booster with Pure Vitamin C 10%
Hit refresh: Add two drops of this energizing treatment—which includes vitamin C, salicylic acid, and caffeine—to your moisturizer to improve skin's radiance, tone, and texture.
$19.50; Clinique.com

Best for combination skin: Olay Regenerist Miracle Boost Concentrate
Amp up your favorite face cream by pairing it with this performance-enhancing serum, loaded with niacinamide, glycerin, and a peptide for increased hydration and firming.
$25; drugstores

Best for sensitive skin: Clarins Hydra-Essentiel Bi-Phase Serum
Dehydrated skin soaks up the moisture from this botanical-based blend of soothing Kalanchoe pinnata, a succulent plant, and Orthosiphon stamineus, an herb.
$59; Clarins.com