I had botox 3 days ago in my forehead. I'm getting a massage tomorrow, can my forehead be massaged?

I generally tell patients to wait only until the next day after a Botox treatment before doing anything that might affect the position or desired effect of the injected medication. This includes exercise, lowering the head below the heart, getting a facial, massage, rubbing the injection areas, or lying face down. 3 days after injections should be no problem.
All the best,

After botox injections, vigorous manipulation or tight compression (hats etc) could potentially create diffusion of botox to areas that were not intended.  Usually, it is a good idea to avoid excessive manipulation of the areas treated for the first few hours after treatment.  Beyond the first day, there will not likely be any increased risk or massaging the area.

There is no reason botox would be affacted by massage even if it was done immediately after injection.  Best, Dr. Emer.