Analysis of Red-Lipstick using Attenuated Total Reflectance Fourier -Transform Infrared Spectroscopy

Abstract

In the context of criminal investigations, specifically those involving crimes against women, it is common to findcosmetics such as lipstick, eyeliner, eye shadow, nail polish, and vermilion as potential evidence. These cosmeticitems are frequently used in everyday life and can be easily transferred onto clothing, drinking cups, handkerchiefs,tissue papers, cigarette butts, and various surfaces through contact during the commission of a crime.This paper presents the application of Attenuated Total Reflectance Fourier-Transform Infrared Spectroscopy(ATR-FTIR) as a powerful technique for investigating the chemical composition of red lipstick. By employingATR-FTIR spectroscopy, the researchers have analyzed the compounds present in the red lipstick. This spectralanalysis provides valuable chemical information that can aid in criminal investigations and forensic analysis. Theresult demonstrates that ATR-FTIR spectroscopy is a highly effective tool for examining the chemical compositionof cosmetics. The technique enables the identification of key compounds and functional groups present in thesamples, allowing for differentiation and characterization of various cosmetic products. Overall, this paperhighlights the significance of ATR-FTIR spectroscopy as a valuable tool in forensic analysis and criminalinvestigations involving cosmetic product (red lipstick). The chemical information obtained through this techniqueprovides crucial evidence that can contribute to the understanding and resolution of cosmetic-related crimes.