Facial Anatomy for New Injectors
Facial anatomy for new injectors is about what goes wrong when someone treats a face without knowing how it is built. The page treats the layers and compartments as the first thing a new injector learns.
PubMed Central puts the expectation directly: "Nonetheless, providers offering facial filler injections should have detailed knowledge of facial anatomy, including facial planes and soft tissue compartments."
For clinicians in Parsippany, New Jersey weighing a first filler course, ask how much of the course time goes to anatomy. Working with a cadaver is one way a course can teach it.

Around the eye, the nose and mouth, then the fat
Move through these in order, from the tissue around the eye to the fat compartments beneath the skin.
Periorbital anatomy and the tear trough covers the structures around the eye, including the tear trough.
Nose and perioral regions as difficult zones covers the nose and the area around the mouth as difficult zones.
Facial fat compartments and volume loss covers the facial fat compartments and their link to volume loss.
Naming the planes from memory
Before treating a patient, a clinician should be able to name the planes and compartments in the zone, and to place the facial muscles that move the result once it is in. If you cannot do that from memory, you are not ready to do it on a patient.