LinearZ and Tightan vs Ultherapy: How Korean HIFU Compares

What is “Korean HIFU”?

HIFU stands for high-intensity focused ultrasound. Ultherapy, made by Merz Aesthetics, is the microfocused ultrasound device most people have heard of, and it is the usual reference point for comparison. Korea has since developed its own HIFU devices, and many Korean clinics use them alongside Ultherapy. At Maylin, the two Korean systems are LinearZ, made by Jeisys, and Ultraskin Tightan II, made by Wontech.

All three work on the same idea. Ultrasound energy passes through the skin surface and converges at a set depth, where it creates small heated points. The tissue contracts slightly, and over the following weeks the body rebuilds collagen in those layers. None of them cuts the skin.

How does Ultherapy target depth?

Ultherapy uses separate transducers for different depths. The standard ones focus at about 4.5 mm, the level of the deeper muscle and fascia layer often called the SMAS, at about 3.0 mm in the deep dermis, and at about 1.5 mm for finer skin texture. Its defining feature is visualization: the transducer shows a live ultrasound image of the layers under the skin, so the doctor can check where the energy will land before each line is delivered.

Ultherapy Prime is the current version of the system. For what changed from the original, see Ultherapy Prime vs classic Ultherapy.

How do LinearZ and Tightan target depth?

Both Korean devices use interchangeable cartridges, each set to a fixed depth, so a treatment can move from the dermis down to the SMAS layer by changing cartridge. Neither shows a live ultrasound image. The doctor places energy based on knowledge of facial anatomy, the cartridge depth and how thick the skin feels in each area.

• LinearZ offers two delivery modes: dot, which places separate heat points, and linear, which spreads energy along a continuous short line. Linear delivery lets the doctor cover an area more evenly with each pass.
• Tightan II uses interchangeable cartridges for different depths and places energy as a pattern of heat points, so the doctor can work area by area across the cheeks, jawline and under the chin.

Without live imaging, the skill and anatomy knowledge of the person treating you matter even more. Ask who will perform the treatment before you book.

Side by side

Is Korean HIFU just a cheaper copy?

Not in the sense of being the same thing at a lower level. Korean HIFU devices are separate products with their own engineering, and they have a large place in Korean clinics because they suit lighter, repeatable lifting. They are also usually quoted lower than Ultherapy, mainly because the device, cartridges and treatment plan differ. The cost of any lifting session depends on the device, the areas and the number of lines; you get a clear quote after the consultation.

What Korean HIFU does not offer is the image guidance that Ultherapy is known for. For people with thin skin, a lot of asymmetry, or previous treatments in the area, that live view can be an advantage.

Who tends to suit which?

• Ultherapy Prime often suits people with moderate laxity along the jaw, jowls or brow who want one well-planned deeper treatment, typically repeated around once a year or as the doctor advises.
• LinearZ or Tightan often suit people in their late 20s to 40s with early softening, those who prefer shorter intervals between sessions, or those who want to add a lighter session between deeper treatments.
• Either may not suit a very thin, hollow face, where deep heat can make volume loss more noticeable. A doctor may suggest a different approach in that case.

How often to repeat each is covered in our lifting maintenance plan.

Do they feel and heal differently?

All focused ultrasound produces brief, deep heat at each point, and areas over bone feel strongest. Downtime is similar: redness and mild swelling for hours to a day, sometimes tenderness for a few days. Lifting develops over two to three months for all three, because it depends on new collagen. Settings matter more than the brand name for both comfort and outcome.

What should you ask before choosing?

• Which device will be used, and why that one for my face rather than the other?
• Which depths will be treated in each area, and how many lines?
• Will a doctor perform the treatment, and how will settings be adjusted for thin or sensitive areas?
• When should I send photos so the result can be reviewed after I fly home?

Clear answers to these questions matter more than the brand on the device. If an answer is vague, ask again.

FAQ

Plan a visit: send a front and side photo on WhatsApp, LINE, or KakaoTalk, and we will explain whether Ultherapy, LinearZ or Tightan fits your face better, in English, before you land.