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Our Top Peptide Serums Best Overall: SkinCeuticals P-Tiox, $150 Best for Expression Lines: Allies of Skin Multi Peptides & GF Advanced Lifting Serum, $188 Best Firming: SkinMedica TNS Advanced+ Serum, $295 Best Budget: The Inkey List Collagen Peptide Serum, $17 Best for Large Pores: Beplain Mung Bean Pore Tight-Up Serum, $34 Best for Mature Skin: Laneige Bouncy and Firm Serum, $45 Best for Sensitive Skin: Este Lauder Advanced Night Repair Synchronized Multi-Recovery Complex, $85 Best Firming: Medik8 Liquid Peptides Advanced MP Face Serum, $94 Best Overall: SkinCeuticals P-Tiox Why it's worth it: We can go on about the science of the SkinCeuticals P-Tioxs powerhouse peptide duo, but here are the basics: The neuropeptides in this formula, which signal skin cells to repair damage and boost collagen, target expression lines that are too risky to treat with neuromodulators like Botox, such as nasolabial folds (smile lines)

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Vegans are also at risk since B12 is only found in animal products
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