Cleaning nicotine from an acrylic on canvas painting?

Дата публикации: 07-09-2017 23:09:56

I picked up a painting at Value Village recently. It appears to be acrylic on canvas. It is a hearty winter scene of lumberjacks in the woods -- nothing special, I just like it. There is plenty of snow, and lots of white clouds, all of which is quite brown with nicotine. Now -- how do I clean this painting, and restore it to its original appearance? The paint is quite thick and textured, and in some places the taller 'caps' in the waves of paint have broken off, exposing the original pure white colour of the snow. Of course, it's not just the snow which is more brown with nicotine -- the whole thing is covered.
Following my earlier question on a different painting, I have tried spit. It didn't work on this one. I have also tried a mild vinegar and water solution, which also didn't work. I have tried a mild household lemon cleaner and water solution, and didn't get anywhere either. For these early tests, I have used only Q-tips and a clean J-cloth, no actual brushes yet.
This nicotine layer is pretty hard, almost like a shellac. I am quite certain the painting was never varnished, that this is just years of tobacco smoke residue. I have read this question about cleaning smoke from furniture, but things might be a bit different with cleaning a painting.
Any ideas of what I should be using to step up the cleaning power?

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