Lingonberry extract

origin: growing in coniferous forest and mingled forest in the west slope of DaXinAnLing and DaXinAnLing area in HeiLongJiang province.
Chemical ingredient : leaves contain ursolis acid, arbutin, pyrosde, 6-o-acetyl-arbutin,salidroside,4-hydroxyphenyl beta-gentiobioside,avicularin,quercetin 3-D-qlucosyl-L-rhamnoside, 2-o-caffeoylarbutin, iso-quercitrin