Facial Fat Transfer in Vancouver, BC. -- how is the fat harvested and injected?

I'm 26 and interested in facial fat graft to fix my hollow temples, forehead and sunken cheeks. I would love to know about the procedure, the costs, how the fat is harvested and injected. I learn that in Korea, clinics and hospitals are doing nano fat graft instead of the traditional micro fat graft. Would it be the same in Vancouver, BC. I'm aware that a portion of the transferred fat will be absorbed. In that case, would the second injection make the result semi-permanent? Thank you!