In Nampo-dong: Daiso Busan Nampo (46 Gudeok-ro) or Busan Gukje Market (13 Junggu-ro), both 10am–10pm. The market store is handy while sightseeing there. The 30ml 진정리페어 booster ampoule has 487 reviews at 4.8. The 150ml cleansing oil can't go in your carry-on, so pack it in checked luggage.
Daiso Mall
Daiso MallDaiso Mall