These are two different kinds of energy pointed at the same complaint: skin that has started to loosen. SkinTyte uses infrared light. Ultherapy uses focused ultrasound. Neither one breaks the skin.
Ultherapy is the one with a formal lifting indication. It was authorised by the FDA through a De Novo in September 2009 (DEN080006), which created its whole device category. Its current face and neck wording says the system is intended to lift the eyebrow, lift lax submental (beneath the chin) and neck tissue, and improve lines and wrinkles of the decollete.
SkinTyte is harder to write about honestly, so this page will not pretend otherwise. It is Sciton's infrared broadband light treatment. Infrared light passes through the surface and warms the dermis, the layer where collagen sits, while the skin surface is cooled. It is usually sold as a series of sessions with no downtime. There is very little published research on this device, so treat this as a description of how infrared devices are generally said to work, not as a verified account of this one. Published clinical evidence for SkinTyte specifically is limited, and this page will not quote a clearance number, a treatment depth or a study result for it that could not be verified.
So the useful comparison is not "which is better". It is that one of these has a defined depth of action, a reviewed indication and a well-known trade-off (it is uncomfortable during the treatment), and the other is gentler and much less documented.
Broadband infrared light delivered through intact skin, with the surface cooled.
Authorised through an FDA De Novo in 2009 (DEN080006), which created the product category for focused ultrasound aesthetic devices.
The heat is spread through the tissue rather than concentrated at one point.
At that focal point the tissue reaches coagulation temperature and forms small columns of denatured collagen. Everything between the transducer and the focus is spared. Healing contracts those points over about two to six months.
The 4.5 mm transducer reaches the deep support layer under the face (the SMAS). One caution: those millimetre figures come from the standard frequency-and-depth naming of the transducers, not from wording in FDA labelling.
A February 2025 clearance added skin laxity on the abdomen and the front and back of the arms.
It does not mean SkinTyte does not work. It means that when you look for trials that measured it, name it and follow patients over time, there is very little to read.
That matters in a practical way. With Ultherapy you can point to the wording FDA reviewed and to a described depth of action. With SkinTyte you are relying mostly on what the manufacturer and the clinic tell you. If a clinic quotes a study, a depth or a clearance for SkinTyte, it is fair to ask them for the source.
It heats a focal point up to about 4.5 mm down, which is deeper than needle-based skin treatments reach. That is why it is described as a lifting device rather than a texture device.
The other side of that: it cannot do anything for surface texture, scarring or pore appearance, because it deliberately passes over the top layers without touching them.
Documented but uncommon problems include temporary injury to a facial nerve branch, causing a weak or uneven smile or brow, and loss of fat under the skin in a treated area.