Alltite vs Thermage FLX: RF Skin Tightening Comparison
Radiofrequency (RF) skin tightening is one of the most reliable ways to improve firmness without surgery, and visitors to Busan will find several RF devices on offer. Thermage FLX is the best-known name internationally, while Alltite is a newer option often included in Korean lifting packages. Both heat the skin to rebuild collagen, so the real questions are how they are used, how often, and what you pay.
Quick answer: Alltite and Thermage FLX both use radiofrequency energy to heat the dermis and deeper tissue, tightening existing collagen and stimulating new collagen for firmer, smoother skin. Thermage FLX is usually a single, more intensive session repeated every 6–12 months, with treatment counted in 600 or 900 shots. Alltite is generally lower in cost and can be planned as a series or paired with other devices such as ONDA or Ultherapy. Neither replaces focused ultrasound for deeper sagging.
How RF skin tightening works
RF energy passes through the skin and is converted into heat in the dermis. That heat has two effects: collagen fibres contract straight away, giving a slight tightening, and a healing response follows over the next weeks and months, producing new collagen. Because RF heats the skin itself rather than the deeper SMAS layer, it is particularly suited to loose lines, crepey texture and a general loss of firmness.
Thermage FLX
Thermage FLX is the latest generation of the Thermage system from Solta Medical in the USA. It uses monopolar RF to heat the deep dermis evenly, with a cooled, vibrating tip for comfort. A temporary grid is marked on the skin, and the tip is applied pulse by pulse so that coverage is even. Remodelling continues for 2–6 months after treatment.
Alltite
Alltite is also an RF device that delivers heat into the dermis and deeper tissue. The handpiece is moved across the skin over about 30–60 minutes after numbing cream. Firmness builds gradually over several weeks. In Korea it is commonly offered in combination packages rather than as a stand-alone flagship treatment.
Side-by-side comparison
- Technology: both radiofrequency; Thermage FLX is monopolar RF with cooling and vibration.
- Main goal: both target firmness, loose lines and crepey texture.
- Typical plan: Thermage FLX is one session every 6–12 months; Alltite can be a single session within a combination or a monthly series.
- Numbing: both use numbing cream for about 30 minutes.
- Session time: about 30–60 minutes for either.
- Downtime: none for either; mild redness fades quickly.
- Duration: both typically 6–12 months.
Who suits which
Thermage FLX may suit you if
- You want one intensive session a year rather than a series.
- You want treatment that can be adapted to the eye area and neck.
- Crepey texture and overall firmness are your priority, and budget allows.
Alltite may suit you if
- Your skin feels thinner and less firm, especially along the cheeks and jaw, but sagging is not heavy.
- You want RF as part of a combined plan with ONDA or Ultherapy.
- You prefer a lower cost per session and can return for repeat sessions.
When RF alone is not enough
If deeper cheeks and jowls have dropped, focused ultrasound such as Ultherapy reaches the SMAS layer and is usually more effective; RF is often added to it rather than replacing it. If fullness is caused by fat rather than loose skin, ONDA is more targeted. RF is generally avoided if you have a pacemaker or implanted electronic device, metal implants in the area, are pregnant, or tend to form keloid scars.
Cost in Busan
Example prices at a clinic in Seomyeon:
Alltite
- Alltite 400 shots + ONDA 60kJ + sheet mask : from KRW 790,000
- Ultherapy 300 lines + Alltite or OligioX 300 shots : from KRW 1,090,000
- Ultherapy 600 lines + Alltite or OligioX 600 shots : from KRW 1,990,000
Thermage FLX
- Thermage FLX 600 shots + full-face skin Botox : from KRW 1,890,000
- Thermage FLX 900 shots + full-face skin Botox : from KRW 2,590,000 (can be shared by two people)
Prices checked October 2026. They exclude 10% VAT, which is added at payment, and prices change often. Notice that Alltite is mostly sold in combinations, so the comparison is less about RF device against RF device and more about which overall plan fits your face and budget.
On the day
- Consultation: the doctor assesses skin thickness, laxity and texture, and decides how many shots each zone needs.
- Numbing: cream for about 30 minutes. For Thermage FLX, a grid is marked to guide placement.
- Treatment: 30–60 minutes of deep warmth. Thermage FLX delivers distinct pulses eased by cooling and vibration; Alltite is delivered as the handpiece moves across the skin.
- After: mild redness and warmth fade quickly, and you can return to your day.
Results timeline
- Right after: skin may feel slightly tighter and smoother.
- Weeks to months: new collagen builds; Thermage FLX continues remodelling for 2–6 months.
- 6–12 months: results fade gradually with ageing; maintenance keeps them going.
RF results are subtle and progressive. They make skin look firmer and fresher rather than producing a dramatic lift.
Side effects and aftercare
Both are generally well tolerated when performed by a doctor. Expect redness, warmth or mild swelling for hours to a few days, and temporary tenderness. Rarely, RF can cause burns, blisters or small areas of fat loss, and Thermage FLX can rarely cause temporary surface irregularities.
- Avoid saunas and jjimjilbang, hot baths, alcohol and strenuous exercise on the day.
- Use sunscreen for 1–2 weeks and avoid scratching or rubbing.
- Keep skin moisturised. Flying is generally fine.
Frequently asked questions
Is Alltite a cheaper version of Thermage?
It is a different RF device rather than a copy. Both work on the same principle of heating the dermis to rebuild collagen, but they differ in hardware, settings and how they are typically planned and priced.
Can RF be combined with Ultherapy?
Yes. RF works on skin firmness while Ultherapy lifts the deeper SMAS layer, so the two are commonly combined in one visit for a more complete result.
How many sessions will I need?
Thermage FLX is usually one session repeated every 6–12 months. Alltite may be a single session within a package or a series about a month apart, depending on your skin.
Comparing RF tightening options?
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This article is for general information and does not replace a medical consultation. Suitability, results, recovery and side effects vary from person to person.
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