Do I have to have a bandage and wear a headgear for a facelift?

I have seen people say on the internet that wearing headgear after a facelift is not even a real facelift. For such confusion of concepts, it can be said that one does not understand medicine. What is the purpose of wrapping after a facelift? What kind of problems can be caused by not wearing headgear? A facelift requires a large area of the face to be peeled, after the peel is equal to the skin and the subcutaneous SMAS fascia layer is separate, in this layer there are many tiny blood vessels, there is the possibility of blood seepage. There is no bleeding during the surgery because we use some hemostatic techniques, but when the drugs slowly lose their effect after the surgery, there will be a lot of small blood vessels bleeding. If no bandage is applied, localized bleeding may occur, after which a localized hematoma is formed and a hard bag appears. With time, it is usually possible to recover slowly, but if it does not recover naturally, it is necessary to find a doctor for treatment. If it is a relatively large blood vessel with bleeding resulting in a hematoma, it even needs to be removed by open surgery. But if we do a good bandage early, no such problem will occur. So bandaging is like an insurance policy, not necessarily 100% of the problems will occur without bandaging, but it may greatly increase the chances of bleeding, and bandaging is done for prevention, not treatment. Regarding the wearing of headgear, this is a medical requirement and must be carried out. The first purpose of wearing a headgear is to give the local area a proper strength and to make it as flat as possible. Secondly, the face must be swollen in the early postoperative period, and the tissues contain more water, so when we move around, there will be discomfort of pulling, so the “hood” will play a good protective role to prevent the pulling of facial tissues. I saw that some people pointed out that wearing headgear can lead to skin necrosis. In fact, wearing a headgear must be the appropriate force, it needs to compress the blood vessels not to bleed, but also can not make the pressure tight, otherwise it may produce tissue necrosis, this force must be appropriate.