I had botox in 3 areas of my face yesterday. Is there a time limit before I can use fake tan or get a spray tan from a salon?

In my practice, I let patients apply make up, spray tan, etc the following day after botox or fillers. You should be fine 24 hours after. Always defer to your Injectors practice guidelines. Good luck. 

HI Nicole. I am so excited that you are using a spray tan to avoid damaging and harmful UV radiation that has been known to cause skin cancers! You are safe to proceed with the fake spray tanning today as you wish, this should not affect your results at all.