M. Graham's Walnut Oil and Walnut Alkyd mediums offer artists a non-toxic, environmentally friendly alternative to solvent-based, fast-drying alkyd mediums. These walnut oil mediums closely mimic many characteristics of sun-thickened oils and natural resins typically used with oils but do not require harmful solvents. Furthermore, walnut oil mediums remain flexible after drying; over time, they tend not to yellow as much as linseed oils.

Brushes can be cleaned during and after painting with walnut oil, followed by a final wash in mild detergent if painting does not resume for several days. No harsh thinners or turpentines are required for clean-up, which helps minimize the disposal of harmful chemicals and unnecessary pollution.

Walnut oil is a natural vegetable oil that effectively removes colour from artists’ brushes. It does not evaporate or strip essential oils from the brushes. Adding walnut oil to the colour slows drying, enhances flow, and increases sheen.

The walnut oil medium is crafted to enhance the distinct qualities of our oil colour while being fully compatible with other artists' oil colours and mediums.