Dermal fillers and other injectables are everywhere. The quick and easy in-office procedure has become SO popular, that “filler parties” are a real thing. You know, where a group of friends get together to get their face plumped, smoothed and contoured to perfection. But the ease of the procedures shouldn’t underscore the fact that there are still risks involved, like blindness.

Allure reported last year a study that was published in the Journal of the American Society of Plastic Surgeons, which explored how hyaluronic acid fillers (like Juvederm and Restylane) had caused several cases of blindness. Now it’s happened a little closer to home, to a woman who has reportedly lost sight in her right eye after it was said she received injections in a beauty salon, reports New Beauty.

As we have heard before, all dermal fillers are supposed to be safe. It’s all about how precisely the needle is placed for fillers around the eye area. Lily Talakoub, a board-certified dermatologist told Allure, “A filler injected improperly into the main artery of the eye, which sits just under the eye, would cause a filler to occlude the artery.” When this happens, the filler blocks blood flow, which can cause you to lose sight.

This can technically happen with any filler injected around your eyes, though it’s not a risk of neurotoxin injections like botox. “Certain fillers that are thicker are more likely to cause blindness,” says Talakoub. “This can be avoided by having a skilled provider inject under the eye.”

This part is key – experts are warning against going to anyone other than a board-certified dermatologist for any sort of injectable. In this case, which was first investigated by Four Corners, her fillers were reportedly administered by a nurse practitioner at a salon.

This setup is pretty common in Australia, with med spas and salons have specialty nurses or physician assistants on staff regularly to offer fillers on their menu of services. It may seem legit, but it’s still a very risky procedure according to the experts. “My advice is to go to a board-certified dermatologist that has experience in under eye fillers,” Talakoub says. In fact, it’s even worth going a step further before you go under the needle, she says. “Not all board-certified dermatologists even have experience in this area,” she explains. “You need to really do your homework.”

Before committing to a cosmetic injector, make sure you research, talk to board certified dermatologists or plastic surgeons who specialise in the procedure you’re interested in, and make sure you fully understand the risks involved.