The Ordinary Caffeine Solution 5% + EGCG is a lightweight eye serum that targets puffiness and dark circles. It combines 5% caffeine (to reduce swelling) with EGCG from green tea (an antioxidant for soothing and brightening). It’s affordable, fast-absorbing, and best for morning or nightly use. Works well for puffiness, but may not fully fix dark circles caused by genetics, shadows, or pigmentation.