Eveline Cosmetics Serum Shot 5% Caffeine Puffiness 30MLEveline Cosmetics Serum Shot 5% Caffeine Puffiness 30ML Reduce puffiness and dark circles with Eveline Cosmetics Serum Shot 5% Caffeine Puffiness. This serum contains 5% caffeine, which has been clinically proven to reduce puffiness and even skin tone. This 30ml bottle will last you up to a month and can be used both morning and night for maximum effect.