Variations
There are several variations in the formulation.
Sometimes 60% of the lanolin was replaced by neatsfoot oil.
One disadvantage of the solvent hexane is its tendency to evaporate rapidly. Before the fat/hexane mixture has been able to penetrate deep into the leather the hexane evaporates to the surface of the leather, taking most fat with it.
While beeswax prevents air pollutants from penetrating the leather it does this by closing off the leather, thus disturbing the water balance and causing the leather to dry out.
Read more about this topic: British Museum Leather Dressing
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