A prospective, randomized, parallel group study analyzing the effect of BTX-A (Botox) and nonanimal sourced hyaluronic acid (NASHA, Restylane) in combination compared with NASHA (Restylane) alone in severe glabellar rhytides in adult female subjects: treatment of severe glabellar rhytides with a hyaluronic acid derivative compared with the derivative and BTX-A.

Abstract

BACKGROUND Over the past 15 years, BTX-A has become the standard treatment for dynamic glabellar furrowing. Some individuals have resting glabellar rhytides that are sufficiently deep that they respond poorly to BTX-A alone. OBJECTIVE To compare the efficacy of BTX-A combined with intradermal nonanimal stabilized hyaluronic acid (NASHA) with the efficacy… (More)

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