Originally Posted by
Hoyaheel
No, the whole issue is to be able to buy something larger as desired at PVG duty free, not something that will fit into the 3-1-1 bag.
If no one can let me know about duty free, I'll ask crew on my outbound flight
The small bottle rule only applies at primary security for the most part, though some flights to the US still have secondary screenings at the gate. While I'm not a cosmetics expert by any means, for must product categories, it's possible to get much better prices in the US.