Treatment of forehead/glabellar rhytide complex with combination botulinum toxin a and hyaluronic acid versus botulinum toxin a injection alone: a split‐face, rater‐blinded, randomized control trial

Abstract

Glabella and forehead lines can be effectively and safely reduced with neurotoxin alone as well as neurotoxin in combination with fillers. Combination treatment may provide a slightly better cumulative benefit and also increase the persistence of effect.