Coffee grounds work great as a face scrub because their texture helps exfoliate the skin and remove dead skin cells. Another one of the great benefits of coffee on the skin is reducing cellulite. This is so because the caffeine in coffee dehydrates your fatty cells, causing the cellulite to appear diminished and making your skin look much smoother. Yet another advantage of coffee is its ability to reduce the appearance of puffiness and dark under-eye circles. Because of its anti-inflammatory properties, caffeine can minimize the accumulation of blood under your eyes, therefore preventing dark circles. Caffeine has anti-inflammatory properties that make it a great way to get rid of any redness and swelling on your face and skin.