Peptides
Signal peptides stimulate collagen synthesis and have the strongest clinical backing in this family of actives (documented split-face trials). Copper peptide (GHK-Cu) works via copper, an enzymatic cofactor, though its skin penetration remains uncertain. Never combine with pure vitamin C or direct acids in the same application — the reaction degrades both.
How to choose
For mature skin that cannot tolerate retinoids, or during pregnancy and breastfeeding, peptides are the best-documented anti-aging alternative. As a first step, a watery "booster" serum goes on right after cleansing, morning and evening. For the eye area, choose a dedicated cream or hydrogel patch. Peptides combine well with niacinamide, hyaluronic acid and ceramides; keep pure vitamin C and acid exfoliants for another time of day.
Pair it with
Browse our signs of aging selection, our retinol products for skin that tolerates it, and our collagen products, often paired with peptides in Korean formulas.
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COSRX
COSRX The 6 Peptide Skin Booster Serum 150ml
Sungboon Editor
Sungboon Editor Silk Peptide EGF Intensive Ampoule 40ml
COSRX
COSRX The Peptide Collagen Hydrogel Eye Patch, 60 patches
COSRX
COSRX Advanced Snail Peptide Eye Cream 25ml — Snail Mucin Eye Cream
