About Jang-seok Yoo
Jang-seok Yoo is Diar's chief director. His biography records an MD from Hanyang University and prior roles at LO& clinics, MisoDream, N&U, Erne and Wonjin's dermatology department. The range of previous aesthetic practice settings provides context for his current consultation role.
Qualifications & professional experience
Professional background published by the clinic.
- MD, Hanyang University
- Former director, LO& Apgujeong and Sinchon
- Former director, Wonjin dermatology department
Where to see Jang-seok Yoo
Diar Clinic
10th Floor, KI Tower, 8, Gangnam-daero 69-gil, Seocho-gu, Seoul
Diar lists energy-based lifting, thread lifting, pigmentation care, skin rejuvenation and hair-loss services. Named devices include Thermage FLX, Ultherapy Prime and Potenza. These represent different treatment approaches and should not be treated as interchangeable.
Other doctors at this clinic
- Hye-jin Jang — Physician · Skin and aesthetic care
- Seong-cheon Lee — Physician · Aesthetic medicine
Sources & further reading
Sources checked 27 October 2026. This guide is editorial information, not a personal diagnosis or an independent clinical review.