Organic pigments bismuth oxychloride

Pigments consisting of mica or talc coated with bismuth oxychloride and blends of BiOCI with organic or inorganic colorants are also available. 

Colorants (organic dyes) must be approved by the Food and Drug Administration (FDA) in the United States. So-called cream enamels contain insoluble organic dyes and titanium oxide or iron oxide a few soluble organic dyes are used to tint colorless polishes. The nacreous pigments guanine, bismuth oxychloride, or mica are added to pearlized polishes. 

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