Nida Ali University of Karachi Abstract

Products used for hair care by humans are essential for cleaning, protection, perfuming, and
beautification. These are applied directly on the skin and can be a potential factor for dermal
exposure to toxic metals. The present research deals with the assessment of heavy metals in the
hair care products available in the local markets of Karachi, Pakistan. A total of 20 brands of
shampoo and 05 brands of conditioners were collected in triplicate and analyzed for 10 heavy
metals (Fe, Mn, Cr, Ni, Cu, Co, Pb, Cd, Zn, and Hg) by atomic absorption spectrophotometer.
Toxic metals were found to be higher in conditioner than in shampoo of respective color and
brand. Ni and Zn concentrations have exceeded the maximum permissible limits. Consumers
belonging to the lower class are more vulnerable to heavy metals exposure because of the high
metal content in low-cost products. These results suggested that hair care products should also be
considered as one of the sources of heavy metals exposure.

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Research Articles

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