Holbein - Ox-Gall Medium
Ox-Gall Medium
Achieve seamless wet-into-wet blends on even the most resistant papers
Watercolor beading on sized paper disrupts fluid washes and prevents smooth color transitions. Ox-gall medium eliminates this surface tension issue, allowing pigment to spread evenly across resistant papers without pooling or crawling. Just a few drops added to your water breaks down barriers that normally repel paint, transforming stubborn surfaces into receptive grounds for wet-into-wet techniques.
This traditional wetting agent proves essential when working on hot-pressed papers or surfaces treated with heavy sizing. Holbein formulates this medium to enhance flow without compromising pigment intensity or drying properties. The solution integrates seamlessly into your working methods, add it directly to rinse water for consistent results across an entire painting, or apply it locally to specific areas requiring extra flow control.
Wet-into-wet passages become more predictable and controllable with ox-gall in your water. Colors blend smoothly at their edges rather than creating hard lines or resisting contact. The medium also assists when layering washes over previous applications, helping subsequent layers settle evenly without disturbing dried pigment underneath. Botanical illustrators and landscape painters particularly value this control when rendering atmospheric effects or subtle gradations that demand flawless color merging.
