Ingredient 101: Peptides
Scroll through any skincare routine on TikTok or Instagram, and peptides are almost impossible to miss. Touted as the “next generation” of skincare, they’ve quickly moved from industry insider conversations to everyday bathroom shelves. Beyond that buzz, peptides signal a more considered approach to skincare, one that supports the skin’s natural functions rather than overriding them.
At their core, peptides are short chains of amino acids, the building blocks of proteins like collagen and elastin, which support skin structure, resilience, and elasticity. As we age, both the amount and integrity of these proteins decline, leaving skin more susceptible to the visible effects of gravity and repeated facial movement; think wrinkles, sagging, and loss of firmness. In skincare, peptides act as messengers, helping signal the skin to carry out functions like supporting collagen and elastin production.
Unlike more aggressive actives that aim to resurface or rapidly renew, peptides take a quieter approach. With consistent use, the help support the appearance of firmer, smoother-looking skin while contributing to a more balanced, resilient barrier. You’ll most often find them in serums and moisturizers, where their lightweight, layer-friendly nature makes them easy to integrate into even the most streamlined routines.
This positioning has made peptides especially popular among a wide range of skincare users. They’re generally well-suited to most skin types, including sensitive, and are often recommended for those noticing early signs of aging or looking to future-proof their routine. At the same time, they layer seamlessly alongside more active ingredients, making them a versatile addition rather than a replacement.
Despite their growing popularity, peptides are sometimes misunderstood. Their benefits tend to be gradual, which can feel at odds with the instant results often showcased online. Social media has undoubtedly amplified their visibility, but it has also, at times, inflated expectations. In reality, peptides are less about transformation and more about reinforcement, supporting skin so it continues to function at its best. They may not deliver overnight change, but their staying power lies in something more enduring: skin that looks consistently smoother, stronger, and better supported over time. In many ways, they speak the skin’s language.
• pitch perfect peptides •
MCoBeauty Peptide Lip Treatment, $11.96, available at Walmart
This luxurious cream-oil gloss instantly nourishes lips, locking in moisture for a fuller, smoother, and visibly plumper-looking pout. Infused with lip-loving peptides and shea butter, the non-sticky formula helps condition and repair dry, cracked lips while softening the appearance of fine lines.
Drunk Elephant Protini™ Polypeptide Firming Refillable Moisturizer, $96, available at Sephora
This (refillable!) peptide-packed gel-cream moisturizer immediately improves the appearance of skin’s tone, texture, and firmness. Visibly firms skin and supports healthy collagen production, restoring bounce.
Rhode Peptide Glazing Fluid, $48, available at Sephora
The signature step to dewy, glazed skin. Rhode’s Peptide Glazing Fluid is a lightweight, quick-absorbing gel serum that hydrates and brightens skin. It provides an instantly dewy and luminous finish while visibly plumping skin over time.