You’ve no doubt heard the buzz about peptides—but do you actually know what they are? Yeah, thought so. Jwala Karnik, M.D., chief medical officer at Suneva Medical in San Diego, gave us the lowdown on the ingredient—and why it’s being added to so many products.
WH: So what is are peptides anyway?
Karnik: A peptide is a biological molecule made up of either short or long chains of amino acids, which are the building blocks of protein. Peptides have the ability to penetrate the top layer of the skin and help produce collagen.
Why are they so great for skin?
Since peptides are small enough to penetrate the skin, when applied topically, they signal the skin to repair itself. As a powerful anti-aging skin-care ingredient, peptides play an important role in replacing lost collagen [the structural protein in skin that keeps it looking young].
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How exactly does that work?
As you age, you lose collagen, either from environmental or physical stressors. The result is wrinkled and/or sagging skin. As collagen is a protein composed of long chains of amino acids linked together by peptide bonds, [applying] peptides…helps to improve skin’s appearance.
When adding peptides to your routine, what types of products should you look for?
Peptides are best applied in serums or creams, but you should consult with a dermatologist to determine what routine is optimal for your individual case.
Do you have any favorite products?
A great product to consider is Regenica Replenishing Crème ($175, regenica.com). Regenica is specifically formulated with powerful peptides and growth factor technology to replenish what the skin loses over time, helping to reverse signs of aging. For best results, gently massage a liberal amount of the cream over your face, neck, and décolletage in the evening after cleansing your face. You can see results in as little as two weeks.
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Other Peptide-Infused Products We Swear By:
Olay Regenerist Night Recovery Cream ($22.99, olay.com)
Paula’s Choice Resist Super Antioxidant Concentrate Serum ($34, paulaschoice.com)
Perricone MD Hypallergenic Peptide Complex ($98, nordstrom.com)
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