Mica
Mica-based pigments are typically not approved as food colors in the US. The EU permitted E555 historically but mica-based pearlescent pigments often used TiO2 (E171) coatings, which the EU banned for food in 2022.
What it is
Naturally occurring silicate mineral; in food/cosmetic context refers to mica-based pearlescent pigments (E555 potassium aluminium silicate, often coated with TiO2/iron oxides).
Pearlescent/glittery colorant; primarily used in cosmetics and limited food/confectionery decorations.
Why it's flagged
- limited food authorization
- may be coated with TiO2 (E171, EU-banned)
What regulators actually say
"Mica-based pearlescent pigments... may be safely used to color foods generally except in foods for which standards of identity exist."
"Titanium dioxide (E171) is no longer considered safe as a food additive."
Regulatory status
United States — FDA
Mica-based pearlescent pigments approved as color additives for limited cosmetic and some food/drug uses (21 CFR 73.350 mica-based pearlescent pigments)
European Union — EFSA
Potassium aluminium silicate E555 historically authorized; many mica-pearlescent products used E171 TiO2 which is now banned for food in the EU since August 2022
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