Materials (For the purposes of styling tools):
Ceramic: Durable and smooth, ceramic is a natural source of negative ions and emits far infrared heat. Leaves hair smooth and shiny.
Titanium: Highest thermal conducting metal. The best for retaining heat.
Tourmaline: A mineral, and similar to ceramic is a natural source of negative ions and far infared heat.
Silver: A purifying agent. Low contact resistance reduces friction for gentler styling.