The fillers we are talking about are all FDA-approved for the treatment of lines and wrinkles. But that doesn’t mean they are without risk.

“Filler injection is a medical procedure and should only be performed by the most skilled injectors with a thorough knowledge of anatomy,” says Pierre. That sounds, well, obvious, but aestheticians and third-party vendors can offer the treatments at discount prices, which is extremely tempting but most definitely not advised. Go to a doctor, period. Not only can the result be aesthetically non-ideal–uneven, clumpy, bumpy–but there can also real risk.

“Filler injection appears to be a deceptively simple procedure that can quickly lead to complications in inexperienced hands, the most serious of which is blindness,” Pierre continues. Even with a skilled practitioner, expect redness, bruising, swelling, and tenderness in the day after your procedure.

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