Health Risk Assessment of Heavy Metals in Cosmetic Products

Health risk assessment involves evaluating potential adverse effects arising from exposure to heavy metals such as lead, cadmium, mercury, arsenic and chromium in cosmetic products. Exposure routes include dermal absorption, inadvertent ingestion and inhalation of aerosolised particles. These metals may accumulate in biological tissues, leading to neurological, carcinogenic, renal and developmental outcomes. Analytical advances have improved sensitivity and selectivity for trace metal detection, enabling more comprehensive exposure profiling. Regulatory frameworks differ globally, with some jurisdictions enforcing strict maximum impurity thresholds, while others lack harmonised limits. Recent efforts focus on refining hazard characterisation through metrics such as hazard quotient and carcinogenic risk, integrating product usage patterns, skin permeability data and population-specific exposure scenarios. Emerging concerns extend to environmental release of cosmetic waste, emphasising the need for circular economy principles in product design. Interdisciplinary collaboration among chemists, toxicologists and public health practitioners underpins ongoing progress towards safer personal care formulations and informed regulatory decisions.

Research from Nature Portfolio

No recent Nature Portfolio content available.

Health Risk Assessment of Heavy Metals in Cosmetic Products publication trend

The graph below shows the total number of articles in health risk assessment of heavy metals in cosmetic products across all publications each year (not limited to Nature Index journals).

Technical terms

Acceptable Daily Intake (ADI): The maximum amount of a chemical substance, such as a heavy metal, that can be ingested daily over a lifetime without appreciable health risk.

Chronic Daily Intake (CDI): An estimate of a substance’s long-term exposure dose, usually expressed per kilogram of body weight per day, accounting for frequency and duration of contact.

Hazard Quotient (HQ): The ratio of an estimated exposure to a reference dose; values above one indicate potential for non-cancer health effects.

Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES): An analytical technique that uses high-temperature plasma to excite atoms and measure characteristic light emissions, enabling quantification of trace metals.

Bioaccumulation: The process by which chemicals, including heavy metals, concentrate in living organisms over time, often through successive exposures.

References

1. Heavy metals in cosmetics and tattoos: a review of historical background, health impact, and regulatory limits. Journal of Hazardous Materials Advances (2024).
2. Concentrations and Potential Health Risks of Metals in Lip Products. Environmental Health Perspectives (2013).
3. Sample Preparation of Cosmetic Products for the Determination of Heavy Metals. Cosmetics (2022).