Background: Treatment of upper facial lines is a common aesthetic practice; however, there is limited information on systematic tailored approaches for the treatment of forehead wrinkles using botulinum toxin A.

Objective: To describe the safety and efficacy of the ONE21 technique using incobotulinumtoxinA (INCO) for the treatment of forehead wrinkles.

Methods: Single-center, retrospective study with 86 females presenting a baseline Merz Aesthetic Scale (MAS) score ≥2 for dynamic forehead lines who had been treated with INCO using the ONE21 technique. Assessment was performed by two independent blinded raters using MAS for forehead lines (dynamic and at rest), and eyebrow positioning, based on standardized pictures taken before (baseline) and 4 (±2) weeks after treatment injection. The primary outcome was the percentage of subjects with a MAS improvement ≥2 points for dynamic forehead lines at week 4 (±2). Secondary outcomes were MAS scores for resting forehead lines and for eyebrow positioning.

Results: The mean age was 46.2 years, and mean total dose of INCO, 20.3 U. Most (97.7%) subjects had a MAS improvement of ≥2 points for dynamic forehead lines at week 4 (±2); 100% improved ≥1 point. MAS scores for resting and dynamic lines, and eyebrow positioning were significantly improved (P<0.001). Eyebrow positioning MAS improved ≥1 point in 56.9% of subjects, and 39.5% maintained the original shape.

Conclusion: INCO injection using the ONE21 technique is effective and safe in treating forehead wrinkles, providing a natural result, with a customized treatment and a predictable eyebrow shape. J Drugs Dermatol. 2021;20(1):31-37. doi:10.36849/JDD.5617.

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http://dx.doi.org/10.36849/JDD.5617DOI Listing

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