Thermage, Ultherapy Prime, Sofwave: What’s the Difference? / Dermatology Clinic near Sinnonhyeon Station

SECRET CLINIC

5.0(50+)

The most common question in anti-aging consultations is, “Which is better, Thermage or Ultherapy?” It’s a difficult question to answer, not because one is clearly better than the other, but because they are not on the same axis. Putting procedures that work in different layers into a single ranking is like asking whether a screwdriver or a hammer is the better tool.

That is why, in consultations, we do not start by choosing a device name. We first look at what has actually changed on the face. Once it is clear which layer the change began in, the options naturally narrow.

What the three procedures have in common

First, one thing should be noted. If sagging has already progressed significantly and there is a large amount of excess skin, surgical treatment through an incision is the standard approach. The procedures discussed below are considered before reaching that stage, or when surgery is difficult to choose. Many materials explain things in the reverse order, but that does not help set expectations.

Given that premise, procedures using radiofrequency and ultrasound belong to the same broad principle. Without making an incision, they deliver heat to a specific layer of the skin, and that heat induces the body’s repair process so collagen is newly formed and reorganized.

Two things follow from this. One is time. Repair and remodeling take weeks to months, so it is difficult to judge the result by the immediate appearance after treatment. The other is individual variation. Even with the same energy, tissue responses differ from person to person.

Radiofrequency and ultrasound deliver heat differently

Monopolar radiofrequency uses heat generated as molecules rotate while current passes through the tissue. This method has the characteristic of warming a relatively broad volume all at once. It is reported that collagen contracts immediately from the heat, and later, during the wound-healing process, collagen and elastic fibers are newly produced.

Cooling is used at the same time to protect the epidermis. However, cooling is not simply a built-in safety measure. The literature points out that while cooling reduces the risk of burns, it comes at the expense of penetration depth. In other words, safely delivering energy deeper is not technically simple.

Focused ultrasound works differently. It concentrates ultrasound energy at a single point and momentarily raises the temperature only there. It is similar to focusing sunlight with a magnifying glass, so rather than following the path of the energy, a tiny thermal coagulation point is created at the focal point. It is a point-by-point approach rather than a broad heating method.

The two methods do not replace each other. Broad heating and point-based treatment create very different types of stimulation in the tissue.

Even among ultrasound treatments, the target layer differs

This is where misunderstanding most often occurs. Procedures grouped under the single term “ultrasound lifting” are looking at different depths.

ULTHERAPY PRIME® is designed to focus at different depths of 1.5 mm, 3.0 mm, and 4.5 mm. Its structural feature is that it can approach different layers, from the dermis to the deeper support structures, while treatment is performed with real-time ultrasound imaging to confirm the layers.

SOFWAVE™ uses 11.5 MHz ultrasound and is designed so that the action point is in the 1.5 mm mid-dermis. It is in the same ultrasound category, but because it targets the dermis rather than the deeper support layer, the treatment layer is different.

So the statement “I had ultrasound, but it didn’t work” cannot be used as a judgment on its own. You need to look at which depth the procedure was targeting and whether that depth matched the changes in that particular face at that time.

Approved areas differ by product

Energy-based devices are approved as medical devices, and approval is not issued broadly for the “face” but for specific areas and specific intended uses. Even within the same ultrasound category, the approved indications differ.

• Ultherapy Prime™: lifting of the brow area, jawline area, and décolleté area, and improvement of décolleté wrinkles
• Sofwave™: used to improve the cheeks, jawline, brows, and neck wrinkles by coagulating tissue with focused ultrasound (ages 22 and older)

Both products use ultrasound, but their approved area lists overlap in some places and differ in others. This is not a marketing phrase, but information showing what each product has been verified for, and to what extent.

Patients can check this themselves as well. If you search by product name in the product information section of the MFDS medical device online civil service portal, you can see the approved indications. If what you were told in consultation seems very different from the approval details, you can ask about it then and there.

So what should you choose based on?

First, look at which kind of change is more prominent on the face.

• If the main change is the skin’s own elasticity and texture, an approach targeting the dermis is considered first.
• If the main issue is blurred contours and downward movement, an approach that reaches deeper support structures is also reviewed.
• If hollowing, or loss of volume, is also present, a tightening-only procedure may not be enough. If there is not enough volume and you only tighten, the face can look even slimmer and more tired.

Skin thickness, subcutaneous fat volume, available recovery time, and previous treatment history are also taken into account. Structural differences between East Asian and Western skin have been reported — relatively thinner skin, a denser superficial fascia, and deeper fascial connections — which is why confirming the layer during treatment becomes even more important.

If the consultation starts with the device name, this judgment is skipped entirely. It is better to reverse the order.

When planning together can help

The basis for planning multiple procedures together is simple. If the target layers are different, they do not overlap and each has its own role. Conversely, adding several procedures that look at the same layer may only increase the burden without much added benefit.

Situations where planning together is actually reasonable include these:

1. When surface texture and contour issues are present together. An approach targeting the dermis and an approach targeting deeper support structures do different jobs, so they can be divided accordingly.
2. When sagging and hollowing are mixed together. A tightening-oriented procedure and a volume-supporting approach are considered together. In cases where fillers were planned after focused ultrasound treatment, there have been reports that the filler shape did not deform or move, but these observations are based on limited data and cannot be generalized to all products and situations.

3. When wrinkles caused by facial muscle movement are present as well. These are not treated with heat-delivering procedures. In clinic, it is determined whether a different approach, such as botulinum toxin injections, is needed.

    

However, one thing should be made clear here. The evidence for the order and interval of combined treatments is still limited. Consensus statements from experts in this field address maintenance intervals, but do not specify the exact time interval between procedures, leaving much of it to clinical judgment.

So in practice, the approach is this: doing everything at once is not always the better choice. If you do one thing first and then check the response before planning the next step, you can see which approach suits that face best. If you add everything from the beginning, you will not know the cause whether the result is good or bad.

More procedures do not automatically mean more effect. The more combinations you add, the more the burden of recovery and the possibility of side effects clearly increase, but the evidence that the effect increases proportionally is not equally clear. It is better to make decisions knowing this asymmetry.

Limitations and risks to know

In general, pain may accompany the procedure, and temporary redness or swelling may appear afterward. These reactions usually subside without special treatment.

There are also risks of a different nature. In ultrasound-based procedures, the literature repeatedly points out that if the energy is placed shallower than intended, burns can occur. Temporary sensory changes due to nerve irritation or weakened facial muscle strength may appear; these usually recover over time, but may take weeks to months. Unlike the changes above, local fat atrophy may not reverse on its own and requires separate evaluation. In radiofrequency procedures, if cooling is insufficient, epidermal damage can occur.

A note on duration: the changes obtained from these procedures are not permanent, and aging continues afterward. For focused ultrasound, maintenance intervals of 12 to 18 months are mentioned, with suggestions that they be adjusted by age, but this is an area with large individual variation.

There is one more thing to check. Expert consensus statements explicitly warn about the influx of low-cost imitation and counterfeit devices into the East Asian market. Before treatment, confirming that the device and consumables used are genuine and officially approved is not an excessive request. Some manufacturers operate systems for verifying authenticity, and approval status can be checked directly with the MFDS.

In summary

Rather than ranking the three procedures, dividing them by layer makes the judgment much simpler. Are you looking at the dermis, the deeper support structures, or do you need to address volume itself? Once the answer to that question is set, the appropriate method generally follows.

And combination treatment is more about division than addition. It is not about what to add, but about which layer to assign to which treatment. If the goal is not a face that looks artificially pulled tight, but one that looks rested and comfortable, then accurately identifying what has actually changed in the face is closer to the desired result than simply adding stronger procedures.

This has been Secret Clinic, a dermatology clinic near Sinnonhyeon Station in Seoul.