Background: Androgenetic alopecia (AGA) is a most common condition of hair loss. Thus, the present study aimed to investigate the effect of TrichoxidilTM, a phytocomplex obtained from a blend of essential oils, in the treatment of hair loss caused by AGA. Methods: The CCD1072Sk cells were cultured for the 24-hour cell viability assessment and cytotoxicity of TrichoxidilTM. The expression of mRNA levels from KGF, IGF-1, and VEGF in fibroblasts was evaluated by RT-qPCR. Thirty-three volunteers, diagnosed with AGA, men and women, aged between 25 and 50 years, were divided into Control group, without treatment (n = 5);TrichosolTM vehicle group, without active (n = 5);Hydroalcoholic vehicle group, without active (n = 4);TrichosolTM vehicle group, with 2.5% minoxidil (n = 5);Hydroalcoholic vehicle group, with 2.5% minoxidil (n = 5);TrichosolTM group with 2.5% TrichoxidilTM (n = 5) and Hydroalcoholic vehicle group with 2.5% TrichoxidilTM (n = 4) to dermoscopic and histologic. Results: Fibroblasts exhibited higher proliferation when treated with higher concentrations of TrichoxidilTM. TrichoxidilTM significantly increased the expression of KGF, IGF-1, and VEGF mRNA in fibroblasts cells. Analysis of the capillary density showed that TrichoxidilTM associated with TrichosolTM vehicle, was the most effective association. In addition, it was observed an increased more effectively the percentage of anagen phase and reduction of the telogen when compared to other formulations. Conclusion: TrichoxidilTM promoted proliferative effects and positively modulated the expression of growth factors IGF-1, VEGF, and KGF, being a promising candidate for the treatment of hair loss caused by AGA.
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