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Removal of overpaint

Much of the damage that can be found today on ancient paintings is due to the widespread use in the Eighteenth and Nineteenth Centuries of caustic alkalis (caustic soda, caustic potash) or other substances …

Overpainting and skinning

Much of the damage that can be found on the paintings today is the result of ancient cleaning operations. Between the Sixteenth and Eighteenth Centuries no distinction was made on the type …

Cleaning

By cleaning a painting we mean: – the removal of surface stains – the removal of surface dirt – the removal of overpaint – the removal of altered protective layers …