Dermal fillers (필러).

Cross-linked hyaluronic acid — a sugar molecule that occurs naturally in skin — is injected to add volume or reshape contour. Different products are engineered for different tissue depths: thin gels for lips and fine lines, medium gels for cheeks, thick/robust gels for chin and jawline.

Imported: Juvederm (Allergan), Restylane (Galderma), Belotero (Merz), Teosyal (Teoxane). Korean domestic: Neuramis, Revolax, Princess, Mediform. Domestic brands typically cost 30–50% less per syringe with comparable cross-linking technology. All major brands are KFDA-approved.

Brand and line (each brand has multiple products for different depths — get the specific one). Price per cc. Whether hyaluronidase (the dissolving agent) is on-site. Whether the injector is a doctor or a nurse — in Korea, most injectable work is performed by licensed physicians, but clarify.

1–3 days of swelling in most areas; 3–5 days for lips. Occasional bruising depending on site. The "final" result is visible at 2 weeks after initial swelling resolves.

Korean brands: ₩300,000–₩600,000 per cc. Imported brands: ₩500,000–₩1,200,000 per cc. A standard cheek augmentation uses 2–4 cc; a full lip augmentation uses 1 cc; chin projection uses 1–3 cc.

"If I'm not happy with the result in 2 weeks, what's your dissolution policy and how soon can I come in?" A reversible product has no excuse for a clinic that won't dissolve on request.