Kim,
Titanium white is warm, full bodied, and delicious (sort of like English beer....). I can't imagine being able to lay in a nice impasto without it. In the soup of a freshly painted nose, for example, the titanium highlight will set right up on top, pristine and pure, not disappearing into the soup an hour after it is placed. I sculpt and model with my paint, and I control the body by the consistency of the titanium white that I use. Rembrandt has an oilier content, and Yarka has a thicker body. My favorite is W/N.
Permalba, by comparison, is thinner, cool, and oily. You can't sculpt Permalba up into lovely thick impastos.
You should give titanium a try! I like a paint that stands up to the plate and gets the job done.
Peggy
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