Art on Paper

Straightforward procedures include removing surface dirt and grime and unmounting a work to separate it from its acidic backing. More complicated water- and solvent-based treatments include tape stain removal, pulping loss repair and stain reduction.

Some samples:

Aqueous treatments

Aqueous treatments such as immersion or slant wash are used to treat overall acid degradation and oxidation.

Burn Lines

Burn lines are caused by the migration of acids from improper matting. 

Jean Miro, undated colored lithograph, 13/150

Fiber pulp fills

Fiber pulp fills will complete the paper loss caused by insects or mishandling.


Bunnies, unsigned charcoal drawing


Foxing is the term for reddish-brown spots caused by either fungal activity, metal-induced degradation, or both.


Pablo Picasso, undated intaglio from Corps Perdu, 38/207

Pressure Sensitive Tapes

Tape and subsequent  stains can be removed mechanically with solvent poultices.

Tide lines 

Tide lines are the stains caused after a liquid entered the paper and stopped.


Elizabeth White,1893-1976, "Spring Twilight, Charleston," undated drypoint


Unmounting is often essential in arresting the migration of acidic degradation products.

Untitled Watercolor by George Biddle, 1928

© 2019 by ReNewell Inc.


  • Facebook - Grey Circle
  • Instagram - Grey Circle