It is perfectly safe to pluck your eyebrows three days after Botox. In general I have patients refrain from manipulation of the injection area and avoid exercise for 24 hours after injection. This is to ensure the medication can bind precisely where it was placed and does not migrate or become diluted. At 72 hours you should be perfectly safe thappy resume all normal skin care and activity.
Tweezing your eyebrows three days after receiving injections will not interfere with your Botox treatment.