While there are many slimming/weight reduction teas in the market that make use of herbs like Garcinia etc, the Oolong teas are pure tea leaves without any additional herbs/spices and are considered to be best for slimming.  You may like to check numerous articles on the internet about the slimming properties of Budwhite Oolong teas.  These Oolong teas are grown in organic tea gardens of the Darjeeling region. These are semi-oxidized teas that are oxidized at the periphery like Black teas and are not oxidized in the center like Green teas. As a result, they develop slimming properties while having a special Darjeeling tea taste. Dosage:- For the best slimming results, you need to take 3-4 cups of tea every day. and are meant to be used 2-3 times over a period of around 8 hours. Storage:-  These are in an air-tight elegant tin to avoid any exposure to air and moisture. Since these teas are made of whole leaves and buds, these release their extracts quite slowly. After straining tea leaves, you can simply cover tea leaves in a bowl. There is no need to put these in the refrigerator.