Mica is a naturally occurring silicate mineral used in cosmetics as a colorant and light-reflecting pigment to add shimmer, opacity, and a smooth feel to formulations. It is considered inert and is widely used in makeup, sunscreens, and skincare products.
| Reported effect | How often | Notes |
|---|---|---|
Mechanical/physical skin irritation | Rare | Fine particles may cause mild irritation, especially in sensitive or compromised skin. |
Allergic contact dermatitis | Very rare | Reactions are generally attributed to impurities or other ingredients rather than mica itself. |
Respiratory irritation from inhalation | Rare | Relevant mainly to loose powder products; inhaling airborne particles may irritate the airways. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.