Foxing is an age-related process of degeneration that causes spots and browning on old paper documents. The term “foxing” may have derived from the fox-like reddish-brown color of the stains. Paper affected in this way is said to be "foxed".
This condition can be caused by many factors, including smoke damage, humidity, mold, water exposure, the rust chemical ferric oxide, or by sunlight and atmospheric pollution which has been absorbed. Once vintage paper has been affected by foxing, the condition almost always spreads until the discoloration reaches across the entire piece. When foxing is being removed, the integrity of the paper is at much risk.
Many restorers treat the removal of foxing by using chemicals and then placing the paper under heavy weight to remove the chemicals and reform the paper. This method often compromises the quality of the paper and its related images.
At The Master Restorer, Gustavo Perez, uses proprietary methods and chemicals he has personally developed to insure the quality and life of the paper we treat. We do not immerse paper in chemicals; rather, we carefully treat the affected areas by using an airbrush while blocking out the unaffected areas.
We pride ourselves on our expertise of bringing vintage paper back to a vibrant state without causing damage to it. At The Master Restorer we guarantee that when we remove foxing from paper, it will never return. We are one of very few restoration sites that can make this claim.