In Seongsu: Olive Young Seongsu Station (91 Achasan-ro), 10am–10:30pm, and
Beauty Mansion Seongsu (108 Seongsui-ro, B1–4F), 10am–10pm. The exosome capsule treatment comes as 230ml + 50ml, with 680 reviews at 4.9. Put the 230ml bottle in checked luggage. Recs: 2