In the field of modern beauty, Thermage FLX is considered one of the most advanced Thermage FLX technologies , providing solutions for skin rejuvenation, wrinkle removal, firming and pore reduction without surgery. With the new version Thermage FLX 4.0 , this treatment optimizes its effectiveness thanks to the mechanism of deep impact on the dermis, stimulating the production of natural collagen, helping the skin to be smooth and elastic from the inside. Many people are also interested in comparing Thermage FLX and HIFU , because both are non-invasive lifting methods, but Thermage FLX stands out with its ability to tighten the entire skin and improve skin texture naturally. This is a safe choice, suitable for all ages who want to maintain youthfulness without pain or long recovery time.
What is Thermage FLX? Why is it considered the gold standard in skin rejuvenation?
Thermage FLX is the 4th generation of Thermage non-invasive skin rejuvenation and lifting device, researched and manufactured by Solta Medical (USA). This technology uses monopolar radio wave energy (CRF – Capacitive Radio Frequency) to transmit heat deep into the dermis and subcutaneous fat tissue, causing old collagen to shrink and stimulating the formation of new collagen, thereby improving firmness and significantly reducing wrinkles.
- Outstanding effectiveness of advanced Thermage FLX technology: No surgery, no injections, no downtime – Thermage FLX helps lift muscles, remove wrinkles and firm skin in areas such as the face, eyes, neck, etc. after just one treatment.
- Mechanism of operation and clinical effectiveness: In the Thermage FLX 4.0 version, the RF wave tip operates at a speed of up to 6.78 million oscillations/second, helping heat spread evenly and stably at a depth of 2-4 mm. The temperature of about 55-65°C is enough to shrink existing collagen and activate the regeneration of new collagen – elastin for many months after treatment.
Results will continue to improve for 2–6 months and last an average of 1–2 years depending on the individual.

Outstanding advantages of Thermage FLX technology
Compared to many current skin rejuvenation technologies, Thermage FLX is highly appreciated thanks to the comprehensive improvements from Thermage FLX 4.0, helping to optimize treatment results and bring a more comfortable experience to customers. Below are the highlights that make this method different:
- Faster treatment time: A Thermage FLX session lasts just under 60 minutes, significantly shorter than older generation technology such as Thermage CPT. This helps customers easily arrange their time while still achieving the desired results.
- Continuous cooling system protects the skin: Thermage FLX technology is equipped with a cooling mechanism before – during – after each RF pulse, helping to reduce burning sensation, increase comfort and ensure safety during treatment.
- Energy optimization with AccuREP algorithm: Thermage FLX has the ability to automatically adjust the RF wave intensity to suit each skin area and each position on the face. Thanks to that, the energy is transmitted more precisely and stably, improving the effectiveness of each pulse.
- 4.0 treatment tip for larger contact area: The Thermage FLX 4.0 version uses a large tip, allowing energy to spread and penetrate deep into the skin layers, thereby shortening the treatment time while still ensuring uniformity of results.
- The results are visible and continue to improve: After the treatment, customers can immediately feel their skin becoming firmer, smoother and wrinkles begin to fade. In the next 1-3 months, the collagen regeneration process takes place strongly, helping the treated skin area to improve continuously and sustainably.
Thanks to its many outstanding advantages such as shortening time, increasing rejuvenation efficiency and ensuring high safety, Thermage FLX becomes the ideal choice for customers who want to rejuvenate their skin without surgery or recovery.

Outstanding benefits and uses of Thermage FLX
Thanks to the application of Thermage FLX 4.0 technology, the Thermage FLX method provides comprehensive skin rejuvenation, deeply affecting both the surface and the underlying skin structure. Monopolar RF waves affect the dermis layer, helping old collagen to shrink and promote the regeneration of new collagen and elastin, creating gradual improvement over time. This is the reason why Thermage FLX is considered by many experts to be a breakthrough in the field of non-invasive rejuvenation, recognized by the US FDA for its safety and effectiveness.
The benefits are easily seen when applying Thermage FLX:
- Natural face lifting and firming: Thermage FLX technology creates a rapid tissue contraction effect, helping the face become slimmer and more defined without surgery or injections.
- Reduces wrinkles and improves skin texture: Collagen production increases dramatically, helping to reduce wrinkles on the forehead, corners of the eyes, and smile lines, creating a smooth and vibrant skin surface.
- Tighten pores and smooth skin surface: As collagen density increases, skin becomes thicker, stronger, and pores become less visible.
- Specialized eye rejuvenation: Thermage FLX 4.0 has a tip specifically for the eyelids, helping to reduce wrinkles, eye bags and loose lower eyelids – the most visible signs of aging. No need for recovery: After the treatment, the patient can return to normal activities, suitable for busy people without a long recovery time.
Not only lifting and wrinkle removal, Thermage FLX also brings many obvious aesthetic effects such as:
- Can be applied to many body areas such as face, neck, abdomen, arms and thighs.
- Slim the face, reduce double chin and create natural V-line.
- Helps break down stubborn fat tissue in sagging areas, leaving skin smoother and firmer.
- Improves dry, dull, uneven skin condition, leaving skin rosy and healthy.
- Visible results immediately after treatment and continue to improve dramatically for 1–3 months as collagen production continues to increase.
With the advantages of practical effectiveness, high safety and no pain – non-invasive – no need for recovery, Thermage FLX is becoming a rejuvenation trend chosen by many customers in Vietnam as well as around the world.

Some limitations to note when performing Thermage FLX
Although Thermage FLX and Thermage FLX 4.0 technology are highly appreciated for their effectiveness in rejuvenating and improving wrinkles, this method still has certain limitations that customers should know before performing:
- Relatively high treatment cost: Compared to many other skin rejuvenation technologies, Thermage FLX has a higher price due to the use of advanced equipment, disposable treatment tips and the need for a doctor to perform. This may cause many customers to consider financially.
- The effect is not 100% immediate: Immediately after treatment, the skin may be firmer, but the optimal results usually appear after 1-3 months – the time when collagen regenerates strongly. Therefore, those who want immediate changes need to understand the mechanism of Thermage FLX correctly.
- There is a slight stinging sensation during treatment: Although Thermage FLX 4.0 technology has an automatic cooling system, it can still cause a burning or slight numbness in the affected skin area – especially in people with a low pain threshold.
- Need a qualified doctor to perform: To ensure safety and maximum effectiveness, Thermage FLX technology must be performed by an experienced doctor. Choosing a less reputable facility can lead to thermal burns, damaged skin or poor post-treatment results.
- Not suitable for all skin conditions: People with acute dermatitis, infections, using strong microneedling or laser or pregnant women are often advised to postpone treatment to ensure safety.

Who is suitable for Thermage FLX and who should not do it?
Thermage FLX is an advanced skin rejuvenation technology using new generation RF waves, suitable for most people with signs of aging who do not want surgery or long-term recovery. The following customer groups are often encouraged to experience Thermage FLX 4.0 technology:
- People with signs of sagging and lack of skin elasticity: Including the condition of loose skin in the face, neck, chin or many other body areas due to age or weight changes.
- Wrinkles and fine lines appear clearly: Wrinkles such as nasolabial folds, crow’s feet, wrinkles around the mouth or on the forehead are problems that Thermage FLX effectively treats.
- Dull skin, large pores or sagging eyelids: Treatment helps to fill the skin structure from deep within, stimulates collagen regeneration, thereby improving skin firmness and evenness.
- People aged 30 and over who want to maintain youthfulness: Both men and women who want to improve their appearance but do not want to inject fillers, botox or surgery can choose this method.

Although Thermage FLX is a safe and minimally invasive technology, not everyone can do it. The following subjects need to be carefully evaluated by a doctor:
- People with implanted electronic devices in the body: Such as pacemakers, defibrillators or other electromagnetic devices, because RF waves may cause effects.
- Pregnant or lactating women: Due to hormonal fluctuations and safety factors, it is often recommended to delay.
- Skin that is inflamed, infected, or has open wounds: Including dermatitis, infection, severe acne, rash, or acute skin lesions.
- Are undergoing aggressive skin treatments: For example, UV treatments, heavy chemical peels, or inflammatory medications – talk to your doctor before treatment.
- People with serious medical conditions: such as blood clotting disorders, cancer, immunodeficiency or acute illness – need to be evaluated by a specialist.
Things to know before and after Thermage FLX
Although Thermage FLX is a non-invasive, safe and optimal rejuvenation technology for aging skin, to achieve the best results, customers should prepare properly before treatment and take appropriate care after the procedure. Below are important notes to help optimize results with Thermage FLX 4.0 technology:
Note before performing Thermage FLX technology:
- A skin examination and analysis with a doctor is an important factor in determining the level of aging, skin laxity and choosing the appropriate treatment energy. This helps to optimize the effectiveness right from the first step.
- Avoid aggressive skin treatments such as high-concentration chemical peels, strong lasers, or UV treatments in the immediate period before treatment. These can sensitize the skin and affect the skin’s ability to withstand the heat of Thermage FLX.
- If you are using products containing active ingredients such as retinoids, high concentrations of BHA, corticosteroids or strong acne medications, you need to inform your doctor for appropriate adjustments.
- Avoid alcohol and stimulants before treatment as they can make the skin red and more sensitive to heat.
- Drink enough water and go to bed early to keep your skin naturally moist, supporting heat conduction during treatment.
Notes after treatment with Thermage FLX 4.0:
- After completing the Thermage FLX treatment, customers can return to normal activities without needing to rest. This is a great advantage of skin rejuvenation technology using monopolar RF waves.
- Skin needs to be moisturized regularly to support collagen regeneration. When skin is sufficiently hydrated, firmness and smoothness will improve significantly.
- Do not steam, hot massage, sauna or high intensity exercise immediately after treatment to avoid skin exposure to excessively high temperatures.
- Protect your skin from the sun with SPF 30 or higher to protect it from the sun and the increased pigmentation that can occur after exposure to heat.
- Regular follow-up appointments allow your doctor to monitor your skin’s response and assess your improvement. Collagen production typically continues for 2 to 6 months after treatment, so monitoring your progress is essential.

Common results after Thermage FLX treatment: Skin becomes firmer, sagging is reduced, wrinkles such as nasolabial folds, eyes, forehead fade over time. Pores are reduced and skin surface is smoother thanks to collagen structure reinforced from deep within.
With the right process and proper care, Thermage FLX is a sustainable, safe skin rejuvenation solution suitable for many customers who want to improve signs of aging without surgery.
Thermage FLX at Dr. Thi Ra – Combining expertise and modern technology
At Dr. Thi Ra’s aesthetic system, Thermage FLX technology is applied in a specialized skin rejuvenation regimen with a comprehensive medical standard process. Not only does the facility own genuine Thermage FLX 4.0 equipment, it also has a team of experienced dermatologists, ensuring that each treatment session brings safe, effective results, lifting, improving wrinkles and regenerating collagen as expected. This is also the reason why many customers choose Dr. Thi Ra when looking for a non-invasive skin rejuvenation solution using modern Thermage FLX technology.

Genuine equipment – new generation update
Dr. Thi Ra uses the new generation Thermage FLX system imported from Solta Medical (USA). The device applies Thermage FLX 4.0 technology with a large tip area, helping to transmit heat deeply and evenly into the skin layers, shortening treatment time but still ensuring skin tightening effect. Using genuine equipment brings stability and safety, helping customers feel secure in each treatment session.
Dermatologist – extensive clinical experience
A prominent advantage when performing Thermage FLX technology at Dr. Thi Ra is that customers are directly examined and treated by a dermatologist with deep expertise. With extensive experience in the field of skin rejuvenation and anti-aging treatment, the doctor can accurately assess the skin condition, thereby choosing the appropriate energy level to optimize the effectiveness of lifting and wrinkle removal while still creating a comfortable feeling for the customer.
Personalized treatment for each skin condition
Instead of using a general protocol, Dr. Thi Ra builds the Thermage FLX treatment based on an analysis of each skin area, the degree of sagging, and the thickness of the target tissue. This personalized approach helps Thermage FLX technology promote its ability to stimulate collagen production from deep within, improving problems such as loose skin, wrinkles, eye bags, or unsightly facial lines. Each client will have their own treatment plan designed to maximize treatment results.
Medical procedure for maximum pain relief
The Thermage FLX skin rejuvenation procedure at Dr. Thi Ra is performed according to medical standards, with all steps from examination, cleaning, anesthesia, treatment with equipment to post-treatment care instructions. The new generation of Thermage FLX technology has a cooling system and smart energy adjustment algorithm to help limit discomfort, creating a smoother and more pleasant experience during the treatment session. Customers can return to normal activities immediately after, without taking time off to rest.

Tiếng Việt
ភាសាខ្មែរ