Comparative study of the efficacy and safety of topical minoxidil 2% versus topical bimatoprost 0.01% versus topical bimatoprost 0.03% in treatment of eyebrow hypotrichosis: a randomized controlled trial.

Eyebrows are an important feature of facial identity and communications in human beings as well as an important eye defense shield from dust and foreign bodies. To compare the efficacy and safety between 0.01%, 0.03% bimatoprost and minoxidil 2% in gel formulations for eyebrow enhancement. Sixty eligible subjects were female or male, aged 18 years or older with eyebrow hypotrichosis, defined as either a Grade 1 or 2 on the Global Eyebrow Assessment (GEBA) scale. Patients were randomized into 3 groups using block randomization. Group a (20 patients) applied topical 0.03% bimatoprost gel once daily onto both eyebrows, group b (20 patients) applied topical 0.01% bimatoprost gel once daily onto both eyebrows while group c (20 patients) applied topical minoxidil 2% gel once daily onto both eyebrows. A significant improvement in GEBA score was reported in all the three groups after treatment (P ≤ 0.001); however, there was no statistically significant difference between the three groups (P1 = 0.091; P2 = 0.102; P3 = 0.663). Bimatoprost is equally efficacious as minoxidil in enhancement of eyebrows with a more favorable response produced by the 0.03% concentration.

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