Skin technology is the group of treatments that change skin quality itself rather than adding volume or relaxing muscle. They work by prompting your own repair: controlled injury from needling, heat from Tixel, focused ultrasound from HIFU, acid from a peel, or regenerative injectables like polynucleotides and Profhilo. Almost all of them work over a course rather than a single appointment, because collagen is laid down on your body's timeline and not on ours.
The common thread across these seventeen treatments is that they ask the skin to rebuild rather than doing the rebuilding for it. That has two consequences worth understanding before you book. The first is that results arrive slowly, usually peaking somewhere between six weeks and three months, so anyone promising a visible change tomorrow is describing something else. The second is that most of them work best as a course, with each session building on the last.
Choosing between them comes down to which layer needs work. Surface texture and dullness respond to exfoliation and resurfacing. Scarring and lines need collagen rebuilt in the dermis. Laxity needs energy delivered beneath the surface of the skin. Getting that wrong is how people spend money on the right treatment for somebody else's problem.