Mercury

Mercury is a chemical element with the symbol Hg and atomic number 80. It is commonly known as quicksilver and is a heavy, silvery d-block element. Mercury is one of the four metallic elements that are liquid at or near room temperature and pressure.

Mercury has been used in various cosmetics and personal care products, including skin lightening creams, anti-aging treatments, mascara, and other makeup items. It serves as a preservative and a skin lightening agent. In household products, mercury may be found in thermometers, barometers, and other devices.

Mercury and its compounds are highly toxic and can cause severe skin irritation and allergic reactions. Contact with mercury or inhaling its vapors can lead to mercury poisoning, which manifests with symptoms like redness, peeling, pain, itching, and even the development of skin rashes.

Mercury exposure can lead to serious health issues, including neurological damage, kidney failure, and potential developmental issues in children and fetuses. It's also harmful to the environment as it can accumulate in water systems, leading to contamination of food sources.

In California, as per Assembly Bill No. 496 (Chapter 441), mercury is listed as one of the banned ingredients in cosmetic products, effective January 1, 2025. This ban extends to the manufacturing, selling, delivering, holding, or offering for sale of any cosmetic products that intentionally contain mercury, among other specified ingredients. The prohibition stems from the recognized health risks associated with mercury exposure and its potential to cause serious skin and systemic health issues, especially among sensitive skin consumers.

Given the significant health risks associated with mercury, its usage in cosmetics and household products has been heavily scrutinized and banned in places like California. Consumers, particularly those with sensitive skin, are advised to exercise caution and avoid products containing mercury or its compounds.