Analysis of Cosmetic Residues on a Single Human Hair by ATR FT-IR Microspectroscopy

    February 2018 in “ Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy ”
    Prompong Pienpinijtham, Chuchaat Thammacharoen, Suwimol Naranitad, Sanong Ekgasit
    TLDR Cosmetic residues on individual hairs can be identified and differentiated using ATR FT-IR microspectroscopy.
    The study demonstrated that ATR FT-IR microspectroscopy, using a homemade slide-on Ge μIRE accessory, was an effective tool for characterizing single human hairs and their surfaces. This technique provided detailed chemical information about the molecular structure of hair, including the presence of proteins, water, lipids, and waxes. The method was non-destructive, required no complicated sample preparation, and had a short analysis time, making it suitable for forensic and cosmetic applications. The research was supported by various Thai research funds and Chulalongkorn University.
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