Glycerin is an humectant and plasticizer ingredient in commercial watercolors today, but it was not always an ingredient in commercial watercolors. An examination of watercolors paints from the late 18th and early 19th century (we can call these historical watercolor paints) reveals that glycerin was not a plasticizer and humectant in pan watercolors (called 'cake' colors in that period). For example, Rudolph Ackermann (b. 1764–d. 1834, Anglo-German inventor and publisher who operated a print-shop ...
Updated September 5, 2011 at 12:22 PM by George O'Hanlon
Rublev Colours Lead White Artists Oil is an opaque white that is smooth and brushes long. The consistency straight out of the tube is creamy, slightly ropey yet retains its shape as you manipulate it while being soft yet sculptural. Our lead white is made with pale linseed oil and basic lead carbonate (made according to modern processes) without stearates (a pigment stabilizer), other pigments or fillers to alter the characteristics of the pigment. As a result you get a higher pigment ...
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