Determination of Heavy Metals in Selected Cosmetic Products sold in Nepal

Abstract

Introduction: Cosmetics are a significant source of heavy metals, as they contain various chemicals as ingredients and additives. There are concerns about the presence of hazardous chemicals in cosmetics, including heavy metals. The objective of this study was to assess the levels of heavy metals, specifically lead (Pb), Cadmium (Cd), and Arsenic (As), in bathing soaps, shampoos, face creams, and bulk powders sold in Nepal.

Methods: Fourteen different brands of bathing soaps, shampoos, face creams and bulk powders were purchased from local markets of major cities of seven provinces of Nepal to determine the concentrations of three metals (Pb, Cd and As) by using Atomic Absorption Spectrophotometry (AAS).

Results: The results showed that lead was detected in four samples, and all of them exceeded the permissible limit. Arsenic was detected in only one sample, which also exceeded the limit.

Conclusion: This study demonstrates that some cosmetic products in Nepal contain heavy metals, such as Pb, Cd, and As, above the permissible limits. The continuous use of such products may result in harmful effects, and consumers should exercise caution. Manufacturers must be informed of their products' status to eliminate these heavy metals, and regulatory guidelines should be strictly enforced, accompanied by routine analytical checks, to ensure that cosmetics are safe for human use.