Product Description
* Daler Rowney Ox Gall Solution is used to increase the wetting and flow of watercolours.
* Add just a few drops of Ox Gall Solution to the mixing water before diluting.
* Daler Rowney Ox Gall Solution is used to increase the wetting and flow of watercolours.
* Add just a few drops of Ox Gall Solution to the mixing water before diluting.