1. What Is HIFU and How Does It Work?

High-Intensity Focused Ultrasound (HIFU) uses concentrated ultrasound waves to target the SMAS layer—the same tissue layer tightened during surgical facelifts. By heating this layer to 60–70°C, HIFU stimulates collagen production and causes tissue contraction without damaging the skin’s surface.

The result is a gradual, natural lift that improves over 2–3 months, with effects lasting up to 12 months depending on skin condition and device type.

2. Why Korean Dermatologists Trust HIFU

Korean dermatologists favor HIFU for patients seeking noticeable lifting without the downtime of surgery. It’s versatile—effective for sagging jawlines, nasolabial folds, drooping eyelids, and even neck tightening. Its safety profile is strong when performed by trained professionals, with minimal side effects like mild redness or swelling.

Clinics also value the ability to customize depth and energy levels, ensuring treatment is tailored to each patient’s skin thickness, elasticity, and pain tolerance.

3. Popular HIFU Devices in Korea

• Ulthera: FDA-approved, known for precise imaging and consistent results. Best for deep lifting.
• Doublo Gold: Widely used in Korean clinics for faster treatment times and reduced discomfort.
• Serf: The latest-generation HIFU device, praised for its improved comfort and multi-depth cartridges.

4. Treatment Experience: Pain, Downtime, and Results

During treatment, patients may feel tingling or heat as ultrasound energy penetrates deep tissue. Pain levels vary depending on the device and individual sensitivity, but cooling systems and numbing creams help ensure comfort.

Most patients return to daily activities immediately after treatment. Visible lifting often appears within weeks, with peak results at 2–3 months. Maintenance sessions are typically recommended once or twice a year.