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Lead, nickel, and cadmium are among the most common heavy metals found in cosmetics today. Heavy metal exposure and toxins in face powders and shampoos can cause damage to skin and hair follicles. I tested multiple lipsticks, shampoos, and face powders for lead, nickel and cadmium by ICP-OES and compare the results to FDA regulations. I also measured the Raman spectra of these samples and sorted them using principal component analysis (PCA) to identify if those samples containing heavy metals could be classified by Raman.
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Morris, Sarah E., "Hidden Toxins in Everyday Cosmetic" (2019). Senior Projects Spring 2019. 152.
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