Under-eye results start with what the treatment itself does.
What the treatment does
Healthline says a tear trough filler is an injectable treatment that’s used under the eyes. In its description, a trained medical professional injects a dermal filler into the area, making the skin look fuller and tighter.
What the research covers
Results are only half the picture, so it helps to read about risks too. One source is a systematic review and meta-analysis of adverse events reported from hyaluronic acid filler injections to the face. Another is a systematic literature review on the safety and potential complications of facial wrinkle correction.
The FDA publishes dos and don'ts for dermal fillers. Nebraska Medicine looks at which filler type suits tear troughs and other areas.
Asking what to expect for your own face
Fuller and tighter is the goal, but how that looks on your face is a question for the injector at a consultation. Ask what to expect for your own under-eye area before any treatment is planned.