Cosmetic Applications

Properties of Talc;

1. Very soft - Talc can be marked by a fingernail. It is at the bottom of the Mohs scale, (diamond is at the top!).
2. Perfect cleavage - The ease of parting along the cleavage surface is due to the strong bonding within layers but weak bonds (Van der Waal's) between layers.
3. Pearly on cleavage surface - Otherwise it is greasy or dull.
4. Low heat and electrical conductivity.
5. Fire resistant - It hardens when heated to a very high temperature.
6. Not attacked by acids.

 All of these properties make Talc an ideal primary ingredient in powder cosmetics.