If a new injector asks me where not to start, this is the area I name. The tear trough rewards restraint and punishes enthusiasm faster than anywhere on the face. It is also where a preventable complication becomes a visual one.
Selection is the technique
Most tear-trough disappointment is decided before the needle. Screen for:
- Malar edema / festoons — compromised lymphatics will hold onto hydrophilic product and puff. This is a decline, not a challenge.
- Skin quality — thin, crepey skin shows every irregularity and every Tyndall blue.
- Vector and volume loss — a hollow that is really midface descent needs midface support first, not trough filler.
Half of good tear-trough work is a well-delivered no, or a "let's treat the cheek first and reassess."
The plane and the placement
The correct plane is deep — supraperiosteal, on bone, medially, placed in small aliquots and molded up into the hollow. You are filling a shadow, not inflating a bag. Product choice skews toward low-hydrophilicity, low-G-prime HA designed for the area; a stiff, hydrophilic filler here is how you create months of puffiness.
Work medial to the infraorbital foramen, aware that the infraorbital and angular vessels run in this territory. Small volumes, slow deposition, and constant attention to blanching and patient sensation.
Vascular discipline is not optional
The periorbital vasculature communicates with the retinal circulation. That single anatomical fact should govern everything: aspirate, inject under the lowest workable pressure, strongly consider a cannula over a needle for the body of the trough, keep aliquots tiny, and never bolus. Have hyaluronidase, your occlusion protocol, and vision-loss escalation steps rehearsed before you treat this area — not printed and filed.
Review, don't chase
Under-correct and bring the patient back. HA in this space integrates and settles; a result that looks 80% at two weeks often looks complete at six. Adding at the first visit because the mirror isn't perfect is how injectors end up dissolving their own work.
The tear trough is where "I could probably fix that" becomes "I created that." Treat the cheek, treat the patient's expectations, and treat the trough last — if at all.