Thanks for the reply

I strongly believe aspiration can give a false sense of security for multiple reasons but mainly because gauge sizes used for facial injections are far too small to aspirate when using most fillers (let alone fat). I mean you can theoretically use a bigger needle/cannula size to potentially help reduce false negative aspirations but that imposes more risk (eg. faster injecting speeds) and trauma. Also, I would imagine it would be very easy to accidently change the position of the needle/cannula after aspirating.
I think I will consult with Dr Seo in person to discuss further.
Perhaps I am being paranoid but I'm a scientist so I've been taught to question everything lol.
All the best for your zygoma reduction!