Ulthera vs Thermage: What's the Difference? A Complete Comparison of Ultrasound and RF Lifting

Ulthera and Thermage differ starting with how they deliver energy

Ulthera is a device that uses ultrasound (HIFU, High-Intensity Focused Ultrasound) energy, focusing it at a specific depth to deliver heat in a point-like manner. The ultrasound is known to reach deep skin layers near the SMAS (fascial layer), stimulating collagen remodeling.

Thermage uses radiofrequency (RF) energy to deliver heat broadly and evenly across the skin, from the surface down through the dermis. Because heat spreads across the entire area the tip contacts, Thermage treatments tend to feel more like a broad, surface-level application compared to Ulthera.

Simply put, Ulthera focuses 'deep and narrow,' while Thermage spreads 'broad and even.' Because of this, Ulthera is often mentioned more for areas with noticeable sagging or contour lines, while Thermage is often mentioned more for overall skin elasticity and texture care—though actual application can vary depending on skin condition and the practitioner's judgment.

What happens in the days following treatment

Immediately after treatment through day 1, both procedures may cause redness, slight swelling, and a sense of heightened skin sensitivity due to heat stimulation. During this period, the skin barrier is temporarily weakened, making it more prone to reacting sensitively to irritation than usual.

By days 2–3, redness typically begins to subside gradually, though many people experience a tight or dry feeling in the skin. Since Thermage delivers heat all the way to the surface layer, some people notice more surface dryness during this period.

From day 4 onward, redness and swelling generally decrease noticeably as the skin enters a stabilizing phase. That said, changes in elasticity from collagen remodeling are known to appear gradually over a much longer period, so it's best to understand the early redness/dryness management and the long-term results as separate matters.

Step-by-step at-home care after treatment

In the first 1–3 days after treatment, it's best to avoid irritating ingredients (high-concentration acids, scrubs, etc.) and cleanse gently with minimal friction using lukewarm water. During this period, the key is to use formulas focused on soothing and barrier care to help the skin find its own stability.

Sun protection is especially important as part of aftercare. Since heat-stimulated skin can also be sensitive to pigmentation changes, it's important to reapply sunscreen carefully whenever going outside.

From around day 4 onward, once redness and sensitivity have subsided to some degree, it's a good idea to gradually shift toward deep hydration and skin-conditioning care. As the skin returns to its normal condition during this period, gradually increasing the richness of moisturizing care can be helpful.

Aftercare determines recovery following treatment

Regardless of the specific method, heat-based lifting treatments like Ulthera and Thermage commonly involve a period where the skin barrier becomes sensitive immediately afterward. Because of this, how well the skin is cared for afterward—rather than which device was chosen—can influence how well results are maintained. Abiju Cream's Ultra Cera-Rich Cream is a STEP1 product designed for soothing and barrier care in the first 1–3 days after treatment, formulated with a lipid-like composition including 5 types of ceramides to help support barrier care for sensitized skin.

Medically reviewed by 아비쥬의원 의료진. (September 10, 2026)