Read the label before the promise.
What each ingredient can reasonably do around the eye, where the evidence is limited, and which reviewed patches contain it.
Caffeine Caffeine constricts blood vessels and improves circulation under the eyes — the only ingredient with strong, consistent evidence for reducing puffiness on contact. Niacinamide Niacinamide is the dark-circle workhorse: it inhibits melanin transfer, strengthens the skin barrier, and plays well with every other active in your routine. PDRN PDRN — Polydeoxyribonucleotide — is a salmon-DNA-derived skin repair molecule that's become K-beauty's defining 2026 ingredient. Here's what it actually does, and which patches use it well.