Peptides are everywhere in skincare. If you're wondering what they are and whether they're worth it, this guide is for you.
What is a peptide?
It's a short chain of amino acids. Skincare uses different types of peptides in serums and creams, generally well tolerated and without the typical irritation of acids.
Types you'll see on labels
- Copper peptides (like GHK-Cu): widely used for skin with marks and texture.
- Signal peptides: common in creams for the look of fine lines.
- Soothing peptides: in formulas for sensitive skin.
How to use them
Apply them after cleansing and before moisturizer, morning and night. They pair well with hyaluronic acid, niacinamide and sunscreen.
How to choose
Look at which peptide it contains, how the formula is meant to be used, whether it's fragrance-free and whether the packaging protects the product. And give it time: changes in how skin looks show over weeks, not days.
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