Holbein Artists' Watercolor - Phthalo Blue Red Shade, 15 ml tube Phthalo Blue Red Shade 15 ml (0.5 oz) This extra-fine, European style transparent watercolor, known for its purity, permanence and brilliance, preserves the brush handling qualities inherent in Japanese watercolor techniques. Because it contains no oxgall, animal by products or other dispersing agents, Holbein watercolor moves slowly, allowing for greater color density and brush control. It has a creamy texture that remains smooth when dry and will not crack, crumble, chip or mold in the palette. To use, simply fill the wells of a palette with the desired color, permit to dry, then wet the color as if it were a pan color.