China is looking into claims of a herbal weight loss patch which its makers said helped former US President Bill Clinton?s daughter, Chelsea (photo), shed 12 kg in under a month, state media reported yesterday. Customers are instructed to stick the patch to the area of the body where they want to lose weight and then just wait for the fat to flow out of them, the Beijing Morning Post said. But in fact the oil seeped from the patch itself, which could be seen when it was put on a warmed up cup or a television set, the report said. The patch is named after an acupuncture point and translates clumsily into ?America Seven-Point Thinness?. Though it claimed to be imported from the United States, it was actually made by a company from the nearby industrial city of Tianjin, the newspaper said.