Nails & Lashes · Seongsu
5x5 Nail Studio Seongsu
오오네일 성수
Contemporary nail art studio
The studio keeps separate accounts for its class offerings and design archive, a level of documentation that's closer to a working design studio than a typical walk-in nail shop.
About: 5x5 Nail Studio (오오네일) runs two Seoul locations, one in Seongsu and one in Yeonnam, and has built a large following around nature-inspired nail art — marble, stone-texture, and watercolor motifs among its signature styles. Appointments, which typically run about an hour to ninety minutes depending on the design, are arranged through Instagram DM or KakaoTalk rather than a booking site.
English-speaking staff support the international clients who make up a large share of its bookings, and the studio maintains sister accounts for its class offerings and design archive — worth a browse before messaging to book, since custom pieces are usually chosen from a reference photo.