未做過 之前做research大概睇左個分別 如果要用兩句講 thermage係做拉皮、皮膚 淺層d ultherapy做提升、輪廓 深層d Healthline described: Thermage is recommended if you’re middle-aged and do not need a surgical facelift or want to go with a non-invasive approach. You should have mild to moderate skin sagging in these areas: neck, jowls, cheek, brows, eyelids. If you’re looking to target the neck and décolleté area, then Ultherapy is the method of choice. These areas are not treatable with Thermage. Ultherapy is also best suited for mild to moderate skin laxity. You may consider Thermage if you’re looking to target skin other than the face and neck. In addition to the face, Thermage also works on sagging skin on the abdomen, thighs, arms, and buttocks - areas not approved for treatment with Ultherapy.