Abstract
Filling with hyaluronic acid using a pen that injects with vacuum pressure in the
lips region became popular due to not using needles, but it presents risks like
any minimally invasive procedure. We present a case of injection of hyaluronic
acid with this device in the labial region, which resulted in a subocclusion of
the inferior labial artery. It is known that the use of pressure can offer a
lower precision than the methods already used classically. Therefore, it is
important to warn about the risks of this device, which despite not using
needles, presents the same risks of complications.