When planning lifting treatment in Korea, I recommend separating the time it takes for results to develop from how long those results may last. The manufacturer timelines below describe different stages, and the duration of results varies with skin condition and the aging process.

Hello, I’m Dr. KIM YEONJIN, head physician at UH CELL Clinic’s Gangnam branch. If you’re visiting Seoul for a short stay, understanding that distinction can help you plan when to assess your results and discuss a future visit.
When results develop vs. how long they last
Merz Aesthetics, the manufacturer of Ultherapy PRIME, explains in its official FAQ that results develop over 2-3 months and may last a year or longer. It also notes that duration depends on the individual’s aging process.
Solta Medical, the manufacturer of Thermage FLX, states in its official guidance that changes develop over 2-6 months after a single treatment. Results may last 1-2 years, depending on skin condition and the aging process.
| Treatment | Time for results to develop | How long results may last |
|---|---|---|
| Ultherapy PRIME | 2-3 months | A year or longer, with individual variation |
| Thermage FLX | 2-6 months | 1-2 years, with individual variation |
These are manufacturer-described timelines, not a guarantee of how your skin will respond.
A short visit does not mean immediate final results
For someone visiting Korea for just a few days, those development periods matter. Based on the manufacturer timelines above, changes may continue to develop over several months after you return home.
I recommend allowing time for those changes to develop before judging the outcome and considering another treatment. The duration listed in the table is not a prescribed repeat-treatment interval.
Because skin condition and aging affect how long results last, the timing of another treatment can differ even between people who received the same procedure. Use these figures as a starting point for planning, rather than a fixed date for your next visit.
Planning around your skin at our Gangnam branch
Our Gangnam branch is located inside the UH FLAT SIGNATURE Gangnam hotel. We design treatment plans after assessing each person’s skin rather than using a uniform package.
Whether Ultherapy PRIME or Thermage FLX is appropriate depends on that assessment. I recommend discussing expected duration and the timing of a future visit in relation to your own skin, rather than choosing a treatment by its longest advertised duration alone.
For more on the location and treatment-to-recovery logistics, see Gangnam Lifting and Anti-Aging: Planning Treatment and Recovery Logistics.
Skin responses and recovery times vary. Please discuss an accurate assessment and an individualized treatment plan with the medical team.

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