Filler options in Korea - what lasts longest for nasolabial folds?

For nasolabial folds, Korea offers many hyaluronic-acid fillers (e.g., the Juvederm and Restylane families and several Korean brands), and longevity depends more on the product's cross-linking and placement than the country. Robust HA fillers in this area commonly last around 12–18 months. Truly longer-lasting options exist — Radiesse (calcium hydroxylapatite) and collagen-stimulators like Sculptra build volume over time and can last 18+ months — but they are not reversible like HA, so weigh that against your wish to avoid permanent products. Sometimes deep folds are better softened by adding volume higher in the cheek rather than overfilling the fold itself. An injector who assesses your whole midface will get a more natural, durable result.

This is general information — an in-person consultation with a board-certified specialist is the only way to get advice tailored to your anatomy and goals.