The Ordinary Dull Tired Duo features the Caffeine Solution 5% + EGCG and Ascorbyl Glucoside Solution 12% which work in unison to help achieve a lit-from-within glow. Set Contents: Caffeine Solution 5% + EGCG The potent formula is blended with a high concentration of caffeine and highly-purified Epigallocatechin Gallatyl Glucoside (EGCG) derived from green tea leaves. The lightweight antioxidant-rich serum seeks to visibly brighten and firm the appearance of your under-eye area. Ascorbyl Glucoside Solution 12% The high-performance serum is enriched with a water-soluble derivative of vitamin C, working to visibly illuminate the under eyes to promote a radiant-looking complexion.