Heavy metals are found naturally in the environment in rocks, soil, and water and therefore be found in pigments and other raw materials in all industries including the cosmetics industry. Some of these metals have been used as cosmetic ingredients in the past.
Heavy metals are naturally occurring, are present in the environment and can make their way in trace quantities into raw materials. These substances end up in the products we consume and use every day. Dermal exposure is expected to be the most significant route for cosmetic products since the majority of cosmetics are applied to the skin.
Dermal absorption of heavy metals is typically low, with an absorption of individual elements influenced by a number of factors including physical-chemical properties of the mixtures.
Oral exposure can occur for cosmetics used in and around the mouth, as well as from hand-to-mouth contact after exposure to cosmetics containing heavy metal impurities. Inhalation exposure is expected to be negligible.The metals of primary toxicological concern in cosmetics are lead, arsenic, cadmium and mercury.
Lead exerts adverse effects on numerous organs and systems including the central nervous system (CNS), the kidneys and on the hematopoietic (blood-forming) system.
Arsenic exerts adverse effects due to a pronounced affinity for skin and keratinizing structures including the hair and nails. Therefore, symptoms of acute overexposure include a variety of skin eruptions, alopecia and characteristic striation of the nails. Arsenic does not act as a sensitizer, due to the poor skin penetrating ability of its naturally occurring compounds.
Cadmium is classified as a human carcinogen by the National Institute for Occupational Safety and Health (NIOSH). Absorption of cadmium through the skin is low (0.5%) and would be of concern only in situations where concentrated solutions would be in contact with the skin for several hours or longer. Cadmium binds to epidermal keratin when applied topically
Various forms of mercury are toxic. The form of mercury plays a role in how much is absorbed via dermal or oral routes. Organic (methyl) mercury is of greater concern than inorganic mercury; however, all forms of mercury are absorbed through the skin and mucosa, and dermal exposure can result in systemic toxicity.
GoAyur Products have heavy metals below the permissible limits and these are tested by Atomic Absorption Spectroscopy