I always do facial first as my most popular facial is facial, 30min massage, lip and chin and brow styling.
I’ve never just done a brow tint on its own so ask if they want shaping too as it will neaten your tint lines and it will affect the order you do the treatment.
We aren’t meant to wax before a massage so I always tell them the nice bits are first and the rude awakening wax is after.
So you can tint first, then do the facial. Or facial first and tint after.
But if wax included: facial, tint, wax is the most time friendly. Or do the tint while mask is on for super duper duper efficiency.