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I understand that linseed-based oil paint essentially dries or hardens by the chemical process of oxidation and not by evaporation. If it is possible that humidity somehow inhibits the chemical drying process in a related physical way, how might that occur?

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  • $\begingroup$ Has anybody ever shown that humidity inhibits the chemical oxidation of linseed-based oil paint ? Never heard about this process. $\endgroup$
    – Maurice
    Commented Aug 7, 2023 at 19:28
  • $\begingroup$ I��m guessing conservation studies tend to examine humidity's effect on linseed oil painting after being painted. I believe actual curing takes months. I have seen one or two artists’ websites which suggest humidity may slow drying, for example. - see "The temperature of your room" subheading under finearttutorials.com/guide/how-long-does-oil-paint-take-to-dry/…. The conclusion of the conservation article below notes humidity can inhibit cross-linking, but I'm not sure about how humidity would slow drying. ncbi.nlm.nih.gov/pmc/articles/PMC6445089 $\endgroup$
    – Sketcher
    Commented Aug 8, 2023 at 2:49

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