does mica irritate skin?
Mica (Sericite) as a general rule is safe for the skin and usually will not cause any significant problems for women with normal complexions; however for those of us, like me, with sensitive, allergy prone skin issues, this ingredient can cause severe distress to the wearer.his is why I use very little Mica in all of my foundations and the Mica is always treated with Methicone. For the most part, mineral makeup is about applying the essential minerals like Titanium Dioxide and Zinc Oxide to the face in order to achieve the proposed healing treatment for the skin.