Here's a little definition from Wiki on mica:
Mica is often found in mineral cosmetics.
Some brands of toothpaste include powdered white mica. This acts as a mild abrasive to aid polishing of the tooth surface, and also adds a cosmetically-pleasing glittery shimmer to the paste. The shimmer from mica is also used in makeup, as it gives a translucent "glow" to the skin or helps to mask imperfections.
Mica is used in the production of pearlescent pigments.
Many metallic looking pigments are composed of a substrate of mica coated with another mineral, usually TiO2. The resultant pigment produces a reflective color depending on the thickness of the coating. These products are used to produce automobile paint, shimmery plastic containers, high quality inks used in advertsing and security applications.
So, is it for the appearance or traction? Just my $.02, Bruce
I had a RSX that looked pearlescent and I called Roger N. and he said that a few of the first RSX's had a little mica in the coverstock which gives it the pearlescence!
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