Botox and Collagen for Glabellar Furrows

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Abstract
Plastic surgeons frequently administer botulinum toxin A (Botox) or collagen as monotherapy to treat glabellar furrows. This study evaluates the possible advantages of combination therapy. Sixty-five patients with moderate to severe glabellar rhytids were prospectively randomized to receive standard injections of Botox, Zyderm II collagen, or a combination. Improvement in rhytids was assessed over 3 months using patient satisfaction scores and an independent physician evaluation. Baseline wrinkle severity was similar in all 3 groups. By 1 month posttreatment, the combination arm showed significantly greater improvement in furrows (79% compared with only 56% and 50% in the Botox and Zyderm arms, respectively; P