The FDA has alerted health professionals of rare but serious injuries that may result from unintentionally injecting soft tissue fillers into facial blood vessels.
Soft tissue fillers—also called dermal fillers, injectable facial implants, or wrinkle fillers—are approved to reduce the appearance of wrinkles or to augment lips or cheeks. They’re injected directly into the treatment area. Unintentional injection into a blood vessel can block the vessel and restrict the blood supply to tissues. Embolization may result, potentially causing vision impairment, blindness, stroke, and damage to or necrosis of the skin and underlying facial structures (http://1.usa.gov/1J5fzyX).
Voelker R. Soft Tissue Filler Alert. JAMA. 2015;314(3):217. doi:10.1001/jama.2015.8139