Seongsu has Olive Young Seongsu Station (91 Achasan-ro), Olive Young Beauty

Mansion Seongsu (108 Seongsui-ro, B1–4F) and Olive Young N Seongsu (13 Yeonmujang 7-gil). 프리메이's vegan ampoule masks come singly in 5 types, 17K+ reviews and 4.9 stars, nice for a sheet mask at the hotel after café hopping.