Refined Walnut Oil

  • – Walnut oil dries at the same rate as linseed oil, but it does not yellow as much.
  • – I use it as the binder for some of our whites.
    • – Use it to thin whites and to bring out the brightness in other colours.

    The use of walnut oil in paint can be traced back even further than that of linseed. When 15th century artists began to add oil to their tempera colours it was walnut oil that seemed the obvious choice. Jan van Eyck in Flanders and Antonello da Messina in Italy both knew of its handling properties; from that time on it was widely used by just about all the great artists, being more a question of who did not use it rather than who did.

    I thought it would be interesting to bring back this oil as a binder for lead white. It survived as the binder for the white made by French colourmen selling to the Impressionists, but it seems to have fallen out of use by the end of the 19th century. I believe the reason for this was its expense. Even today it costs about 3 times the price of linseed oil. But since lead paint needs little oil, the increased cost is less evident. Some accounts I have read speak of its tendency to go rancid, but I suspect this is less of a reason for its demise and more an offered excuse to drop it in favour of other, cheaper oils. Upon researching this matter I can find no evidence of the oil spoiling in any way, particularly while incorporated into the form of an oil paint.

    There was in fact good reason why walnut oil was preferred as a binder for whites: it has the reputation for yellowing slightly less than linseed, and so paler and cooler colours bound with it underwent less change in drying. The film of dry walnut-bound paint is not quite as strong as that bound with linseed, but it is stronger than that of poppyseed oil, and this permits walnut-bound paint to be overpainted in a way which would risk later cracking if poppyseed oil had been used. Walnut oil dries at a rate comparable to linseed. I have read accounts of how it was particularly useful for the very detailed work demanded by work such as portraiture. I suppose the works of the 15th century masters cited above demonstrate just how refined its handling could be.

    It is the feel of this paint under the brush, I think, which constitutes the most compelling argument for its revival. My artist friends have characterized its texture with words like “voluptuous” and “silken”. There is certainly a flow to it which is quite distinct from that experienced using the other oils. One can sense how this had to be the only means by which those precise yet creamy highlights of ruff collars and shot silks were attained by baroque portraitists. Whilst retaining the properties we so value in lead white, walnut oil adds to this paint a cool smoothness which is quite unique. Some of the artists who have tried it tell me that from now on they will paint only with this white.

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2 Responses to “Refined Walnut Oil”

September 01, 2021 at 2:57 am, Adrian Montalvo said:

What is on offer here seems most desirable. Navigating the website can be tricky insofar as finding a price listing. On the technical side I’ve read how that Walnut Oil gets better with age and has a greater ability to take up pigment. I’m also curious to know if it can be used in place of Linseed oil as part of medium. Lastly, it would be very advantageous to find real stand oil (from cold pressed Linseed oil with a greenish tinge which has been allowed to stand for about two years.) I would be most gratified at your response in these particulars hoping to at some time make genuine bistre and find natural red and black hematite chalk. Too – a good, reputable hand made paper maker. Many thanks. – Yours truly, Adrian Montalvo


January 17, 2022 at 8:25 pm, Michael said:

Hi Adrain,

I suggest you conduct your own experiments with walnut oil, you might also wish to explore the merits of sun thickened oils over the standard stand oil. Try Two Rivers Paper see this link

Best wishes


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