I had surgery 16 days ago. Haircut after rhinoplasty, septoplasty, turbinates surgery?

You may cut your hair after rhinoplasty once the cast is off. You do not want stray hairs trapped in the tape or cast. Regarding the mustache, it depends on if alar base reduction or sill reduction was performed. Likely, you can shave - but, you should double check with your surgeon for permission. Best of luck.

A haircut should wait until the splint is off. If you have stitches along the base or columella, you may want to avoid shaving until those are removed, and then do it very carefully so as not to disturb the incision.