Linear Threading in Lips and Folds

Use linear threading by injecting filler while the needle moves through the tissue.

What the technique asks of you

PubMed Central's review of facial fillers defines it: "Linear threading technique is performed by injecting filler as the needle is either advanced or withdrawn within the tissue." Read that as two options. You thread on the way in, or you thread on the way out.

The full text is Facial fillers: Relevant anatomy, injection techniques, and complications.

Where it is used

The same review states: "This technique is commonly employed in lips and the nasolabial fold regions."

The American Academy of Dermatology answers general questions about filler in its fillers FAQs.

What to check before you thread

Confirm with your own license and protocol that you may inject filler at all. Then confirm your training covers lips and folds.