Fat transfer to upper eyelid/brow? Would filler be a better choice?

Thank you for your question. Both are often used, and it depends on what you'd like. Fat must be harvested from another location, however, once injected, the result is permanent. Filler doesn't require harvesting of course, but the filler will only last about a year, depending on which product is used. So there isn't a right answer, just whichever sounds more appealing to you.