Myeongdong Daiso: Main (명동길 43) and Station (퇴계로 134-1), 10:00–22:00. A 30ml perfume is under 100ml, so carry-on is fine. The 15ml 「향기 미스트」 is ₩1,000; 「로맨틱블로섬」 has 639 reviews, 4.7.