Cosmetic dental surgeon and facial expert Dr. Nina Bal raised a serious concern about the practitioners injecting fillers. When conveying her expertise with Harper's Bazaar, she shared that injectors often recommend incorrect procedures for patients. Sometimes, they advise recipients to get fillers to "lift" cheeks or jawlines when this is impossible. Dermal fillers can only contour the region it's injected into. "Patients are having multiple milliliters of dermal filler injected repetitively in the hope of 'lifting' when this is simply not the best treatment option for the patient," Dr. Bal told the publication.

Aside from giving you an unfavorable appearance, the possibility of dealing with an unknowledgeable injector is extremely dangerous. Those who are not well-versed in applying fillers can mistakenly go too deep with the needle and inject the product into a blood vessel. This can lead to necrosis, strokes, or other health conditions, per the FDA.

An unskilled injector can also fail to recognize the signs of filler fatigue. To avoid overtreatment, it's crucial that the patient only gets their fillers reapplied after enough time has passed. Since some fillers can last up to 12 months, a provider should refrain from urging anyone to come in sooner for new shots. If they do, this is another red flag.