Oolong tea is a traditional Chinese tea that is made from the leaves of the Camellia sinensis plant. It is the same plant used to make green and black tea although the oxidation process is different causing the difference in color. All tea leaves contain enzymes as a result of oxidation. Oolong tea is rich in fluoride, manganese, potassium, and caffeine. The main antioxidants in oolong tea, known as polyphenols, that is responsible for its wealth of benefits are theaflavins, thearubigins and EGCG. It can help with weight loss, improve cognitive functioning, and can also alleviate the symptoms of eczema.