Amperometric Detection of Minoxidil in Hair Lotion Using a Glassy Carbon Electrode Modified with Gold Nanostructures

    January 2026 in “ Microchemical Journal ”
    Mayara O. Silva, Thawan Gomes de Oliveira, Eleilton da Silva … Lucio Angnes
    Studysummary In this study, researchers developed an electrochemical method using gold nanostructures on a glassy carbon electrode to detect minoxidil levels in hair lotions, and found it effectively quantified minoxidil in commercial products, revealing discrepancies in their labeled versus actual concentrations.
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    Research cited in this study 7

    1. Voltammetric Detection with a Comprehensive Electrochemistry Study of Minoxidil Using Nuclear Magnetic Resonance and Infrared Analyses: Applications in the Forensic and Pharmaceutical Fields Electrochimica Acta · 2024
    2. A New Mechanism for Resonance Rayleigh Scattering Detection of Minoxidil Based on Catalytic Oxidation of Silver Nanoparticles Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy · 2022
    3. Profile of Dermatological Consultations in Brazil (2018) Anais Brasileiros de Dermatologia · 2018
    4. Electrochemical Detector for Liquid Chromatography: Determining Minoxidil in Hair-Growth Pharmaceuticals Current Analytical Chemistry · 2018
    5. Computational Design and Development of a Novel Voltammetric Sensor for Minoxidil Detection Based on Electropolymerized Molecularly Imprinted Polymer Journal of Electroanalytical Chemistry · 2015
    6. Formulation and In Vitro Assessment of Minoxidil Niosomes for Enhanced Skin Delivery International Journal of Pharmaceutics · 2009
    7. Electrochemical Determination of Minoxidil in Different Pharmaceutical Formulations by Flow Injection Analysis Analytical Sciences · 2006