Example – Gingival show

Levator labii superioris alaeque nasalis (LLSAN) muscle is traditionally thought of as a muscle of the mouth but is also a crucial muscle of the nose. Interestingly, it has the longest name of any muscle in the human body.

Origin: maxilla, nasal bone, medial canthus

Insertion: nasal base

Innervation: facial nerve (VII)

Action: depressor of the tip of the nostril


Ask your patient to smile and look for the slight protrusion of the LLSN Inject perpendicular in the position above.

Inject 4/5 units of toxin in the post shown above deep into the muscle.

Review in 2 weeks for additional treatment if a satisfactory outcome is not achieved.