Linear HIFU Lifting
LinearZ
Linear, not dots — uniform thermal coagulation reaching the SMAS fascia. A High-Intensity Focused Ultrasound (HIFU) that builds fundamental lifting and tightening without surgery.
Duration
10-20 min
Pain
Low
Deep pinpoints
Downtime
Minimal
Redness fades same day
Price
₩300,000~
500 shots · 1000 shots ₩500K
Next-gen HIFU lifting
LinearZ is a next-generation lifting device based on High-Intensity Focused Ultrasound (HIFU) technology. It adopts a differentiated linear irradiation method, achieving more uniform and effective energy delivery.
It delivers multi-layered energy from the skin surface to the SMAS (Superficial Muscular Aponeurotic System) fascia layer, providing fundamental lifting and tightening effects.
Type
Linear HIFU
Depth
4.5 · 3.0 · 1.5mm
Target
SMAS to dermis
Unit
500 / 700 / 1000 shots
Different axes reaching the same concern
They get lumped together as 'lifting', but the force used and the layer reached differ. Here are the three most often compared side by side in consultation, lined up by principle and depth.
HIFU lifting — LinearZ
Ultrasound is focused to a point to create thermal coagulation down to the SMAS fascia. LinearZ arranges those focal points as a line rather than a dot, laying them evenly across a wide area. Of the three, it covers the deepest layer.
Radiofrequency lifting — XERF
Radiofrequency current meets tissue resistance and generates heat. Rather than points, it warms the dermis broadly to contract collagen immediately and then lets new collagen build.
Thread lifting — Jamber
Not heat but physical support. Spring-shaped threads act as a scaffold that fills and holds up nasolabial folds and hollowing at the sides of the cheek from within, sustaining that position for the 6-8 months over which the PDO is absorbed.
This is a difference of role, not of rank. Supporting a hollow is what threads do, warming the dermis broadly is what XERF does, and LinearZ takes the deep layer. More than one is sometimes needed together, so we work out in consultation which axis comes first.
How it works — even lines, layered depth
Unlike conventional HIFU that delivers energy in dot patterns, LinearZ irradiates energy in linear patterns. This creates uniform thermal coagulation points across wider areas for more natural and comprehensive lifting effects.
LinearZ uses cartridges at various depths (4.5mm, 3.0mm, 1.5mm) to deliver multi-layered energy from the SMAS fascia layer to the dermal layer.
SMAS fascia
Fundamental lifting effect
Lower dermis
Collagen remodeling · elasticity
Upper dermis
Surface tightening · texture
How many shots?
Shot count is adjusted by facial structure, degree of sagging, and treatment area — the exact plan is decided in a 1:1 consultation.
500
₩300,000
Focused core areas
700
₩400,000
Wider coverage
1000
₩500,000
Broad, dense coverage
A line held not by pulling, but by firmness building from within.
How results unfold
Right after
An immediate tightening effect appears
2-3 months
Collagen regeneration brings further lifting and firmness (varies)
How a session goes
- 1
Consultation and assessment
We look at facial structure and the degree of sagging to decide which depth and how many shots. If lost volume or skin quality matters more than sagging in your case, we say so.
- 2
Cleansing and preparation
You cleanse the area yourself beforehand, then ultrasound gel is applied and we begin. Numbing cream is usually not used, but if you are concerned about pain we apply it for 15-20 minutes first. Cooling settles the skin and energy is raised in stages, so pain stays low.
- 3
Linear delivery by cartridge
We deliver in lines, changing cartridges by area and goal. In most cases 4.5mm and 3.0mm are used, and for the jawline and double chin where the fat layer is thick we mainly use 4.5mm. The whole session takes 10-20 minutes.
- 4
Finishing and follow-up
Many people feel a tightening right after, and redness usually settles within the same day. Change from collagen renewal appears over 2-3 months, and how much you feel it varies between people. We suggest about three sessions at 2-3 month intervals to begin with, then maintenance roughly once every 6 months.
WHY COCO?
Personalized treatment
Precise analysis of facial structure and sagging to optimize shot count and energy level per cartridge.
Multi-depth approach
Comprehensive lifting from fascia to surface using 4.5mm, 3.0mm, 1.5mm cartridges.
Pain management protocol
Comfortable treatment through pre/post cooling and gradual energy increase.
Recommended for
- When facial sagging has started and lifting is needed
- When jaw and cheek line elasticity has decreased
- When bothered by double chin or submental fat
- When seeking natural lifting without surgery
- When seeking overall skin elasticity improvement
Aftercare & precautions
- Temporary redness and warmth may occur immediately after treatment; usually subsides the same day.
- Avoid hot water for cleansing on the day of treatment; use lukewarm water.
- Adequate moisturizing and sun protection are essential.
- Avoid saunas and high-temperature environments for 1 week after treatment.
Frequently asked questions
Q.What is LinearZ?
LinearZ is a lifting treatment based on High-Intensity Focused Ultrasound (HIFU). Using a linear irradiation method and multi-depth 4.5mm/3.0mm/1.5mm cartridges, it delivers energy from the SMAS fascia layer to the dermis.
Q.Who is it suitable for?
It is suitable for those whose facial sagging has begun or whose jawline and cheek elasticity has decreased, those bothered by a double chin, and those who want natural lifting without surgery.
Q.How long does it take, and what about pain and downtime?
The procedure takes about 10-20 minutes, pain is relatively low, and there is almost no downtime. An immediate tightening sensation appears right after, with further improvement from collagen regeneration over 2-3 months (individual variation applies).
Q.How much does LinearZ cost?
At COCO Clinic it is ₩300,000 for 500 shots. The final cost is decided after consultation depending on the treatment area.
Q.Are there any aftercare precautions?
On the day of treatment, cleanse with lukewarm water instead of hot water, and moisturize and use sun protection well. Avoid high-heat environments such as saunas and jjimjilbang for one week after treatment.
Q.Is there anything to be aware of before treatment?
It is generally a safe treatment, so most people can proceed right away without special preparation. If there is inflammation or infection at the treatment site, however, we wait until it settles. If you have had filler, thread lifting, or Botox, we recommend waiting 1-2 months. Metal or implants in the body do not affect LinearZ. During pregnancy we prefer not to recommend it.
Q.Should I choose XERF or LinearZ?
These are not competing treatments — they differ in the layer they reach and in principle. LinearZ links focused ultrasound heat in lines down to the SMAS fascia, while XERF uses radiofrequency heat to warm the dermis broadly and contract collagen. They in fact pair well, and we recommend combining them: on the same day, LinearZ first, then XERF.
Q.How does it differ from thread lifting?
LinearZ works on tissue with heat; thread lifting supports tissue physically with threads. If the goal is to fill a hollow that has dropped, threads may be the better fit. Neither is superior — they address different axes of concern, and recovery and how it feels differ too, so we sort out which applies in consultation first.
Pairs well with
XERF Lifting
Where LinearZ reaches the SMAS fascia with focused ultrasound heat, XERF warms the dermis broadly with radiofrequency. Because they reach different layers they pair well — on the same day, LinearZ first, then XERF.
Consultation
Is LinearZ right for you?
We'll guide the right shot count and depth plan for your face in a 1:1 consultation.