Charlie,
for the matt coat I use Mr.Color H20, thinned with Mr.Color Thinner 110.
But be careful – if the H20 is not thinned enough it will dry with a white fade.
Better to thin it a bit more than needed and to add one more layer.
It will also fade a little when it is thin enough when it is applied but when it dries, the fading leaves.
The Vallejo wash don’t have to be thinned, but you could. For thinning I like to use distilled water.
You can see the use of Vallejo white wash on this photo :
The bottom left unit is without fading,the 2 other ones with 5 thin layers. On #1962 I added two more layers in the bottom area.
