Target layerL4 · SMASSMAS & Muscle
- Duration
- Advised after consultation, depending on the number of shots
- Recommended sessions
- Number of sessions and intervals advised after consultation
- Downtime
- Advised after consultation, depending on area and intensity
Lefton is a treatment that uses extracorporeal shockwave energy to help improve skin firmness. Results and how soon they appear vary from person to person, and it is not a substitute for surgery or other lifting treatments. Treatment areas, the number of sessions and the cost are decided after consultation.
01Overview
Lefton
Firmness care using extracorporeal shockwave energy
Lefton is a firmness treatment using a device that delivers extracorporeal shockwaves (shockwave energy) to skin tissue.
- Duration
- Advised after consultation, depending on the number of shots
- Recommended sessions
- Number of sessions and intervals advised after consultation
- Downtime
- Advised after consultation, depending on area and intensity
- How long it lasts
- Varies by individual; advised after consultation
How we approach it
The same device can be run very differently.
Lefton is a device based on shockwave energy. We plan it together with RF and focused ultrasound lifting, designing individually how to combine the different energies.
Dr. Tae Hoon Kim, Medical Director
02What to expect
Changes over time
It works by delivering short, strong pressure waves from outside the skin into the tissue to provide mechanical stimulation — a different kind of energy from RF or ultrasound, which target heat.
01Right after treatment
Temporary redness or discomfort may occur in the treatment area.
02A few days
A phase in which symptoms usually settle naturally. If symptoms persist, please contact the clinic.
03During the course
As the sessions set at consultation continue, changes in firmness are checked. The degree and timing vary by individual.
04Progress check
Evaluated together with the progress of any lifting received alongside to decide on further care.
03Device & Technology
Lefton Device
Extracorporeal shockwave energy
Short, strong pressure waves are delivered from outside the skin into the tissue to provide mechanical stimulation.
Lifting combination design
Planned together with RF and focused ultrasound lifting, which use thermal energy, to design firmness care.
04Procedure
How your visit goes
01Specialist diagnosis
We check the areas and degree of reduced firmness, and whether any lifting will be planned alongside.
02Area design
Treatment areas, extent, and intensity are set.
03Treatment
Shockwave energy is delivered according to the dermatologist's treatment plan while monitoring your response.
04Aftercare
You go home after your skin is checked, with guidance on precautions and when to return for a progress check.
Every procedure is performed directly by a board-certified dermatologist.
05Aftercare
Recovery & care
- 01
Same day
Temporary redness or discomfort may occur. Do not rub or press hard on the treated area.
- 02
The next few days
Avoid strong massage or harsh skincare, and moisturize well.
- 03
Sun protection
If you also received lifting, use sunscreen of SPF30 or higher daily during the collagen regeneration period.
- 04
Progress check
The next session and any combination are decided after evaluating progress, not on a fixed schedule.
06FAQ
Frequently asked questions
What is Lefton?
It is a treatment that manages skin firmness with a device using extracorporeal shockwaves (shockwave energy). It works by delivering pressure waves from outside the skin into the tissue to provide mechanical stimulation. It is performed on its own or planned together with other lifting treatments.
How are extracorporeal shockwaves different from RF or ultrasound?
The nature of the energy differs. RF and focused ultrasound lifting deliver heat to tissue, while extracorporeal shockwaves use short, strong pressure waves to provide mechanical stimulation to tissue. Which approach suits you, and whether to use them together, is decided after consultation.
Who is Lefton suited to?
We consider it for those who have started to notice reduced skin firmness, or who want to plan firmness care together with RF or ultrasound lifting. If sagging is pronounced, treatment on its own has limits, so we may recommend combining it with other lifting treatments.
Can it also be used for cellulite or swelling, not just firmness?
Which areas and purposes Grays Dermatology applies Lefton to is explained individually at consultation. This page describes it within the scope of firmness care, so if you have other concerns, please mention them at consultation.
Are there cases where I should not have Lefton?
It is not recommended if you have an implanted electronic medical device such as a pacemaker, have infection or wounds in the treatment area, or are pregnant. If you take anticoagulants or have a bleeding tendency, be sure to tell us at consultation.
Does Lefton hurt?
You may feel a sensation of stimulation as shockwaves are delivered, and the degree varies by area, intensity, and individual. Intensity is adjusted while checking your response, and whether anesthesia is needed is advised after consultation depending on the area.
How long does treatment take, and what is the recovery time?
Treatment time and recovery vary with the area, extent, and intensity, so we advise you after consultation. Temporary redness or discomfort may occur in the treatment area.
How many sessions do I need, and how long do results last?
The number of sessions and intervals are decided after consultation, considering your skin condition and any treatments received alongside. The degree of change and how long it lasts vary by individual, so we evaluate your progress and decide together whether to continue care.
Is it also combined with V-RO Advance, Ultherapy PRIME, or Thermage FLX?
Yes, it is sometimes planned together with RF or focused ultrasound lifting. This approach designs firmness care by adding shockwave energy to lifting that treats layers with thermal energy. Whether to do them on the same day or space them apart is decided after consultation.
Is there anything to be careful about after treatment?
Do not rub or strongly massage the treated area, and keep up with moisturizing and sun protection. If redness, discomfort, or bruising persists or worsens, please contact the clinic.
How much does Lefton cost, and how do I book?
The cost depends on the treatment area and session plan, so it is confirmed after consultation. Reference prices can be found on the price list on our website. Booking is available via Naver Booking, our KakaoTalk channel, or phone (+82-51-710-1891), and consultations are also available via LINE.
Fees
Pricing depends on area and session plan, and is confirmed after consultation. Reference prices are listed on our fee schedule.
See the fee schedule →References 4
- Approval: Lefton · MFDS (Korean FDA) approved
- Korea MFDS medical device registry
- Korean Dermatological Association
- Reviewed by: Dr. Tae Hoon Kim, Medical Director
⚠ Cautions & contraindications
- Implanted electronic medical devices such as pacemakers or defibrillators
- Active infection or open wounds in the treatment area
- Pregnancy (not recommended due to insufficient safety data)
- If you take anticoagulants or have a bleeding tendency, be sure to tell us at consultation
Summary & comparison
| Treatment | Target layer | Main change | Duration | How long it lasts | Downtime |
|---|---|---|---|---|---|
| Lefton | L4 SMAS & Muscle | Firmness care using extracorporeal shockwave energy | Advised after consultation, depending on the number of shots | Varies by individual; advised after consultation | Advised after consultation, depending on area and intensity |
| Ultherapy PRIME | L4 SMAS & Muscle | Ultrasound lifting that reaches the SMAS layer | 40-60 minutes depending on the number of shots | Typically 6 months to 1 year (individual results vary) | Immediate return to daily life; temporary swelling or tingling possible |
| Thermage FLX | L2 Dermis | Monopolar RF tightening that rebuilds dermal collagen | 40-60 minutes depending on the number of shots | Typically around 1 year (individual results vary) | Immediate return to daily life; temporary flushing possible |
| Accent Prime Tune Face | L3 Fat layer | RF lifting that tunes texture, firmness, and contour together | 30-50 minutes | Maintained over several months (individual results vary) | Immediate return to daily life |
| Oligio | L2 Dermis | Monopolar RF tightening with a lighter footprint | 30-50 minutes | Several months to 1 year (individual results vary) | Immediate return to daily life |
Treatments used for the same concern, placed side by side. Which one fits is decided in consultation after the layer is identified.
Next step
Wondering if this treatment fits you?
Tell us what concerns you, and after your consultation we will explain the suitable treatment, schedule and fees in detail.