CAFFEINE SOLUTION 5% + EGCG 1OZ. Benefits: Helps to reduce the appearance of puffiness and dark circles around the eye area. PH 4.50 - 5.00. Key Ingredients: Caffeine. EGCG. Propyl Gallate. Gallyl Glucoside. Research Results: Significantly decreases the appearance of dark circles under the eye in 3 weeks [with continual improvement]1. Minimizes the look of under-eye puffiness in 3 weeks [with continual improvement]2. Visibly brightens the under-eye area after 3 weeks [with continual improvement]1. 1 Clinical testing on 19 panellists using the product 2x/day for 6 weeks. 2 Clinical testing on 23 panellists using the product 2x/day for 6 weeks.