One session lasts six to twelve months. There is no lifting force, but skin thickens and fine lines shallow over four to six weeks, which is how long collagen takes to form around the threads as they dissolve. Adding sessions makes the change in thickness clearer.

It is done after applying numbing cream. Downtime is mild at one to three days, with bruising and swelling for a few days. Fine, barbless threads go in shallowly, so the irritation is less than with lifting threads. It is best to skip the sauna for a week.

Fine, barbless threads are laid in a close grid, so they are usually not palpable. It is not a hooking structure but a mesh laid beneath the skin, so no force concentrates at one point. It is widely used on thin-skinned areas such as the neck and forehead, where other threads are hard to use.