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Despite the approval of certain mica-based pigments for food use, concerns continue to arise regarding their safety. One primary issue is related to heavy metals that can sometimes be found in natural mica. For example, if the mica is derived from contaminated sources, it could potentially introduce elements like lead or arsenic into the food supply, raising health concerns. It is crucial for manufacturers to source their mica from reputable suppliers who perform thorough testing to ensure its purity.


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coloring resin with mica_coloring resin with mica