Under the Lid · September 14, 2025 · 7 min · By Stellan Cho

Under-eye filler: the risks you need to understand

The Tyndall effect, puffiness, and migration make this a high-skill area.

A gloved aesthetic clinician examining a patient's under-eye in a bright clinic

Under-eye filler can be beautiful, but the area is among the most challenging and least forgiving to treat, and understanding the specific risks is essential before deciding.

The thin under-eye skin and the way the area holds fluid create distinctive problems when filler is placed poorly. Too much product, or product placed too superficially, can cause a bluish discoloration called the Tyndall effect (light scattering through filler under thin skin), visible lumps, or a puffy, swollen look as the hyaluronic acid attracts water. Because the area drains slowly, these problems can persist for a long time, under-eye filler can last far longer than expected, sometimes years, and unwanted results linger. Migration and a persistent puffiness under the eyes are common complaints from overfilling.

The saving grace is that hyaluronic acid can be dissolved with an enzyme if it goes wrong, but prevention is far better. The entire outcome rides on injector skill and conservative technique, using small amounts, placing deep, and selecting appropriate candidates. This is genuinely not the area for a discount or an inexperienced injector; complications here are visible, stubborn, and distressing, which is why choosing the right injector matters more here than almost anywhere else. For patients, the practical message is to treat under-eye filler as a high-skill procedure, choose a highly experienced injector who treats tear troughs regularly, and accept conservative results. Done well it is excellent; done poorly it creates problems that outlast the original concern. Respecting the difficulty of the area is the key to a good decision.

Related reading: Surgery vs. filler for the under-eye: choosing right.