Beauty enthusiasts are continually learning about the best ingredients to shop for your skin care routine, ranging from all-stars like retinol to vitamin C. One of the most seemingly abstract are peptides for skin: They’re infused in countless formulas, but what exactly are they, and what do they do for your complexion?

Keep reading for a comprehensive guide on peptides for skin, along with some of the best peptide-spiked products you can buy.

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