In Myeongdong, go to Olive Young Myeongdong Town (53 Myeongdong-gil, 1F–2F) or

Myeongdong Station (Migliore 1F, 115 Toegye-ro), both 10am–10:30pm. For pores, there's the Pore Tightening toner pad double set (60 pads each, 3,369 reviews). The 30–50ml ampoule and cream fit your 1L liquids bag.