I usually bought them from Watsons. Depends on where you live. A few baby shops in Ocean Terminal carry Mustela as well. In HK side, you can try "Eugene Club" at Windsor House, Causeway Bay.
hello....
i was at SOGO in causeway bay with a friend the other day..
its on the 6th floor - the baby floor - but the jumbo side..(newer wing)
they have a wide range of mustela products
eugene's do not carry mustela... from what i heard from last (last week)
they also can be found in some of the bigger mannings shops, as well as park n shop online. i was surprised last time i ordered things online and saw the various mustela products they have.