BlanchingA chromatic alteration manifested as a result of a lightened or whitish area in a paint or varnish layer that was previously transparent and clear, which appears following the application of a solvent. The area affected can often be matter than the surroundings.
COMMENT: COMMENT: Blanching is due to microscopic defects (voids, granules, micro-cracks etc.) that develop within a film layer as it ages. The defects can scatter light making the affected area appear lighter than the surrounding areas
LiteratureBurnstock A., Odlyha M., Caldwell, M., A Technical Examination of Surface Deterioration of Stanley Spencer’s Paintings at Sandham Memorial Chapel., 1993, in: ICOM Committee for Conservation tenth triennial meeting, Washington, DC, 22-27 August 1993: preprints, pp 231-238
Singer B., Davenport J., Wise D.,, Examination of a Blooming Problem in a collection of unvarnished oil paintings, 1995, in: ,
Koller J., Burmester, A., , Blanching of Unvarnished Modern Paintings: A Case Study on a Painting by Serge Poliakoff, 1990, in: , pp 138
Surface Whitening(White) Haze