Eczema (or atopic dermatitis) is a particularly uncomfortable condition, with itchy, inflamed red patches on the skin that often don't respond well to Western drugs and ointments and can get worse in cold, dry climates. Oolong tea, which is made from partially fermented leaves of the Camellia sinensis plant, has been shown to markedly decrease skin inflammation and itching. Japanese researchers speculate that the tea has anti-allergy properties such as polyphenols and tannins that calm an overactive immune response.