https://www.eastcosmetics.com/products/filler-cannula/ FILLER CANNULA This is more flexible and less traumatic than standard needles. Unlike needles, they can navigate through tissue easily without cutting or tearing blood vessels. This significantly decreases the risks of bleeding and bruising. Microcannulas can deliver fillers precisely over an area which would require multiple needle punctures. Fewer injections means less pain, more comfort, and less risk of complications.