Tea bags can be beneficial in reducing the appearance of undereye bags. The caffeine in tea can help to constrict the blood vessels, reducing puffiness and dark circles. The tannins in tea can also help to reduce inflammation, swelling, and redness. Additionally, the warmth of the tea bags can help to soothe the skin, relieving any discomfort or pain. Sources: https://www.medicalnewstoday.com/articles/tea-bags-for-eye-bags https://www.goodhousekeeping.com/beauty/anti-aging/a20703388/tea-bags-for-under-eyes/ https://www.healthline.com/health/tea-bags-for-eyes https://www.hopkinsmedicine.org/health/treatment-tests-and-therapies/how-to-get-rid-of-bags-under-your-eyes https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3401676/