Hi there. It is best to consult the treating doctor as these things vary with the skills of the administering doctor. If you say you have had Botox
earlier then you can expect similar ammounts of bruising. There are some creams which if applied before & after the procedure can limit bruising & give you a much nicer cosmetic effect. This may take 48-72 hrs to be 'pucca'. Hence am not sure if 24 hrs before work is a great idea..if you are concerned about privacy. Then again, the treating doctor is best suited to opine. Cheers!
Dr Praveen Rodrigues Dermatologist
& Cosmetologist, Vikram Hospital, Bangalore, India