There are some serious risks, including blindness, skin necrosis, and tissue death. While these are extremely rare, it,s important to have a knowledgeable injector who has an excellent understanding of anatomy, underlying structures and vasculature. There is very rare incidence of allergic type reactions; however, since most fillers are hyaluronic acid, a naturally occurring element in your body, this is very uncommon.
The most common adverse effects include temporary bruising, swelling and palpable product deposits. All of these are typically completely resolved by your 2 week follow up.