R&F pigment sticks 38ml, sienna yellow extra pale combines the hiding power of titanium with the clean tinting properties of zinc.R&F pigment sticks are seductively soft oil paints in stick form, providing today's artist with a truly direct way to work.They contain no dryers, no fillers or adulterants and no expedients of any kind.Because we do not use shortcuts, the wonderful workability of our pigment sticks depends on a very careful balance of oil, waxes and pigment.