There are several stages to the cleaning of a painting, each stage distinct and separate:

  • The removal of dirt and grime
  • The Varnishing
  • The Retouching
  • The Overpainting.

This process should only be done by a trained professional painting restorer.

Top photo shows a swab with residue of dirt and grime.

This photo shows a painting half clean where the dirt and grime has been removed.