Ultherapy PRIME and Thermage FLX differ in how they deliver energy and how broadly they heat tissue. The choice considers whether your main concern is sagging along the jawline and under the chin, or fine lines and reduced skin firmness, together with skin thickness and facial fat volume.
Ultherapy PRIME vs Thermage FLX: How They Work
1. Ultherapy PRIME: Ultrasound for Tissue Lifting
Ultherapy PRIME uses microfocused ultrasound with visualization (MFU-V). Ultrasound is focused into small points to create thermal coagulation points, or tiny areas where heat coagulates tissue, encouraging collagen remodeling and tissue contraction. Collagen is a protein that supports the skin and helps maintain its firmness.
- Treatment depth: Depending on the transducer used, energy is delivered at depths of 1.5mm, 3.0mm or 4.5mm. The depth is selected with the target tissue, including the dermis and SMAS, in mind. The SMAS is a fibrous supporting structure between the facial skin and the muscles responsible for facial expression.
- Key technology: DeepSEE® real-time ultrasound imaging is used to check the structures beneath the skin and transducer contact while delivering energy at the target depth.
- Main purpose: It is used when considering lifting for lax tissue, including under the chin and on the neck.
The figures 1.5mm, 3.0mm and 4.5mm indicate the transducers' energy delivery depths. Tissue thickness varies across facial areas, so a particular number does not always correspond to the same skin layer.
2. Thermage FLX: Radiofrequency for Skin Tightening
Thermage FLX uses 6.78MHz monopolar radiofrequency (RF). Heat generated by the tissue's electrical resistance encourages collagen contraction and remodeling. Skin tightening means improving firmness by tightening lax skin.
- Heating area: It heats a broad area of tissue beneath the skin surface, including the dermis. This differs from an ultrasound transducer creating small thermal coagulation points at a set depth.
- Key technology: AccuREP® automatically adjusts energy delivery. Cooling and vibration help protect the skin surface and ease discomfort that may occur during treatment.
- Main purpose: It is used when considering improvement in fine lines and the firmness of lax skin.
Comparison of Key Differences
| Category | Ultherapy PRIME | Thermage FLX |
|---|---|---|
| Energy type | Microfocused ultrasound with visualization (MFU-V) | Monopolar radiofrequency (RF) |
| Heat delivery | Creates small thermal coagulation points at a selected depth | Heats a broad area of tissue beneath the skin surface |
| Depth and heating area | Considers 1.5mm, 3.0mm and 4.5mm transducers and the tissue structure in each area | Considers the heating area according to the tip, settings and tissue characteristics |
| Main concerns considered | Tissue laxity and contour changes, including under the chin and on the neck | Fine lines and reduced skin firmness |
| Technical features | Real-time ultrasound visualization | Automatic energy adjustment, cooling and vibration |
Both treatments deliver heat to tissue containing collagen. It is more appropriate to understand the difference in terms of energy delivery and treatment goals than to say Ultherapy PRIME acts only on the fascial layer and Thermage FLX only on the skin surface.
Choosing Between Ultherapy PRIME and Thermage FLX
① Skin Sagging and Firmness
- Ultherapy PRIME: Considered when the focus is tissue laxity, such as looseness under the chin and on the neck, or changes in the jawline.
- Thermage FLX: Considered when the focus is reduced firmness, such as fine lines and lax skin.
A change that looks like a double chin may involve several factors, including skin laxity and fat volume. It is important to distinguish the causes before setting treatment goals.
② Facial Fat Volume and Concerns About Cheek Hollowing
If you have little facial fat or existing cheek hollowing, both treatments require careful planning of the areas treated and energy used. Skin thickness, fat distribution, existing volume and previous treatments are considered together. Ultherapy PRIME visualization helps determine the target tissue and depth.
③ Treatment Areas and Technical Features
Ultherapy PRIME features ultrasound visualization and target depth selection, while Thermage FLX features automatic RF energy adjustment, cooling and vibration. The area to be treated and skin condition guide the choice alongside the device name.
The Purpose of Combining Ultherapy and Thermage
‘Ultherapy + Thermage’ refers to treatment combining Ultherapy and Thermage. When both facial contour sagging and reduced skin firmness are concerns, a plan can assign different roles to the two approaches.
- Considering tissue laxity and skin firmness together: Treatment goals are divided according to how focused ultrasound and radiofrequency deliver energy.
- Planning by area: The treatment area is determined according to concerns such as laxity under the chin and on the neck, or fine facial lines.
- Distinguishing eye-area treatment: Thermage treatment around the eyes is a separate procedure requiring a dedicated eye tip and appropriate eye protection. It should not be understood as using a standard face tip on the eyelids.
Whether to combine the treatments is decided by first establishing whether both are needed. Receiving both does not, by itself, establish greater or longer-lasting results than a single treatment.
Treatment Order: Ultherapy PRIME + Thermage FLX
Ultherapy PRIME followed by Thermage FLX is not a standard order for every case. Same-day treatment, spacing and the order of treatments are planned with the treatment areas, overlapping energy delivery, skin response and previous treatments in mind.
When to Assess Changes and Plan Maintenance
Changes from collagen remodeling are assessed over time. Manufacturer information describes gradual changes mainly over 2~3 months after Ultherapy PRIME and 2~6 months after Thermage FLX. These periods describe when changes develop; they do not indicate when effects end or when another treatment is due.
After combined Ultherapy and Thermage treatment, progress and skin condition guide whether and when another treatment is needed. The durations of the individual treatments are not added together to calculate how long combined results last.
Aftercare Following Combined Ultherapy and Thermage
Both approaches avoid skin incisions, and a return to daily activities is generally quick. Heat or pain may be felt during treatment, and redness, swelling, tenderness, bruising or altered sensation may occur afterward.
1. Adjust Daily Care to Your Skin's Response
- Cleansing and makeup: Routine cleansing and makeup are often possible if the skin surface is intact. Cleanse gently to reduce irritation and follow the instructions provided after treatment.
- When heat or swelling is present: Temporarily adjust activities that increase discomfort, such as sauna use or strenuous exercise. Follow your skin's response and individual instructions rather than a fixed restriction period for everyone.
- Cold compresses: Follow the aftercare instructions on whether and how to use them. Avoid prolonged direct contact between ice and the skin.
2. Reduce Irritation, Moisturize and Use Sun Protection
- Limit strong stimulation: Postpone vigorous facial massage, irritating exfoliation and home skincare devices while redness or tenderness remains. Decide when to restart after checking the skin's condition.
- Moisturizing and sun protection: Use a gentle moisturizer to reduce dryness and apply sunscreen when going outdoors.
- Monitoring recovery: Contact the treating clinic promptly if pain or swelling worsens, or if blisters, persistent tingling or abnormal facial movement occur.
Bookings and Inquiries
Contact us via WhatsApp at https://wa.me/821046019442. Before your visit, you can ask questions and discuss your skin treatment plans.
This post provides general skin information. Treatment effects and side effects may vary from person to person. Please contact CELITA Clinic to ask whether treatment is needed.
