desglossing

Desglossing is a technique used in the restoration of paintings to remove the glossy varnish that has built up over time. This varnish, often applied by previous restorers or the original artist, can obscure the original colors and details of the painting. Desglossing involves the careful removal of this varnish layer, revealing the underlying paint layers.

The process typically begins with a thorough examination of the painting to assess the condition of the varnish and the underlying layers. This is followed by the application of a solvent or other chemical agent to dissolve the varnish. The choice of solvent depends on the type of varnish used and the condition of the painting. For example, methyl ethyl ketone (MEK) is commonly used for oil-based varnishes, while ethanol is often used for water-based varnishes.

After the varnish has been removed, the painting is allowed to dry. The restorer may then apply a new varnish to protect the painting from future damage. This new varnish is usually a more stable and less harmful substance than the original varnish.

Desglossing is a delicate process that requires skill and experience. It is often performed by professional restorers who have specialized training in the field of art conservation. The goal of desglossing is to preserve the original appearance and integrity of the painting while removing the harmful varnish.