Michael Harding Refined Walnut Oil is the best oil medium for thinning white oil paints and brings out the brightness and vibrancy of other colours.
Walnut Oil dries at the same rate as Linseed Oil but does not yellow colours as much. It makes a great oil binder if you are looking to produce your own white oil paints.
This oil medium creates a unique smooth finish to the oil paint and can be over-painted without cracking (it produces a stronger paint film than poppyseed oil).
Available in a 100ml bottle.