Do you use any nano or micronized particles? May 09, 2018 12:42 Updated None of the particles are small enough to be classed as micronized or nano-particles. Related articles What is the exact size of the Titanium Dioxide particles in the powder foundation? What testing do your ingredients go through (specifically titanium dioxide, iron oxides, zinc oxides, and mica)? Where is your Mica sourced Does the Eye Pencil contain any kind of olive derivatives, and what kind of vegetable oil is used Do your products contain nickel or metals?