Holbein - Iridescent Medium
Iridescent Medium
Mix with watercolors to add shimmering iridescent and pearl effects
Iridescent effects demand precise particle suspension, too heavy and pigments sink, too thin and they separate. Holbein formulates this medium to maintain even distribution of light-reflecting particles throughout watercolor applications, creating consistent pearl and metallic sheens that remain stable as paint dries.
Mix it directly with watercolors to transform standard pigments into shimmering variations, or apply it as a final glaze over dried passages to add dimensional highlights. The medium maintains watercolor's characteristic flow and blending properties while introducing optical effects that shift with viewing angle. Particularly effective for atmospheric elements like water surfaces, celestial subjects, or decorative details where subtle light play enhances depth.
Artist-grade formulation ensures compatibility across watercolor brands without compromising paint behavior or causing separation issues that plague lesser iridescent additives. The medium integrates smoothly whether you're working wet-into-wet or building layered glazes, giving you control over effect intensity through concentration ratios. Botanical illustrators use it for dew effects and insect wings; landscape painters apply it to capture light on water. Results remain lightfast and won't yellow or crack as the painting ages.
