I haven't heard much about it ... I don't know how it works ... I think it's safer for external use if I want to lose weight ... One of my classmates bought a Korean PINKbaby Blue Ocean Ice Crystal Slimming Cream on Taobao ... The effect seems to be very good. The price is also legal. It is quite suitable for students. You can go and see ... and get to know everything. Taobao ID: Xinglinmei cosmetics store .. My classmate bought it here. ..