Can a facelift/neck lift be performed 6 weeks after arm liposuction?

The average time of recovery of a arm lift is 6 weeks; since is other area that won't be touch during the facelift is safe to do it; any how my advice is speak to your Plastic surgeon to get an evaluation and give you the green light to go ahead with your next procedure.
Good luck!

Hello, and thank you for your question. You’ll do the vast majority of your healing during the first 4-5 days of your recovery, and most people are completely recovered after 4 weeks. That said, it is still best to consult with the board-certified facial plastic surgeon who will be performing your procedures. He/she will know the extent of your procedure, as well as your medical history to give you a better estimate of your recovery time. Hope that helps!

As long as it is cleared by your surgeon, and there are no signs of infection (everything has healed well), there is no reason as to why you shouldn't be able to get a facelift. It mostly comes down to your comfort level.