There are different White Oil Paints on the Market-although I have heard that Zinc White apparently is not available anymore in South Africa (which has something to do with the Zinc Content or Customs Regulations) If you have any precise Info please post it here.
Titanium White
Is the most opaque and whitest of Oil Color Whites. Widely used and inert to other Pigments.
Flake White
The fastest drying and most flexible of the Whites. ...
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