Winsor & Newton Ox Gall Liquid is a wetting agent used for smooth washes and to enhance flow when mixed directly with watercolour.
Reducing surface tension, it can also be used on very hard-sized paper. Add 3-4 drops per cup of water.
Product Details:
- Works as a wetting agent
- Enhances the flow behaviour of watercolours
- Promotes soak-in of watercolours into hard-sized paper
- Reduces the surface tension of water