Cocoa beans seed from the plant is used to make this natural ingredient. It has antioxidant properties to avoid water retention and reduce dark circles. Coffee Bean Exfoliator can scrub away dead skin cells and unclog the pores. Caffeine stimulates blood ow and widens, or dilates, the blood vessels. This increases blood flow, which can help the skin to tighten naturally. It is primarily due to the presence of Theobromine in it.