Detailed answer

Drinking coffee or caffeinated beverages can worsen dark circles and under-eye bags. Caffeine is a diuretic, which means it can cause your body to lose water and become dehydrated. Dehydration can make the skin under your eyes appear darker and more puffy. Additionally, caffeine can also interfere with your sleep quality, leading to tired-looking eyes and exacerbating the appearance of dark circles and under-eye bags.