Eye Liner Pencil Base
For our Slimline Pencil Blanks.
In Sally's book she recommends that the color be about 10% by weight. For example, for every 5 grams of base (which would fill about 3-4 Slimlines, you would add about a half a gram of pigments).
In our experiments, we tended to add more than that. More like 20% - 30%.