Re-varnishing

After the varnish removal, the paintings no longer appeared yellowed. However, the oil paint lacked the saturation, range of tonal contrasts, and depth of colors (left) that Hogarth intended. This problem was particularly evident with the Hogarth portraits because of an unusual drying effect called micro-cissing, responsible for a fine granular property to the paint surface that when left unvarnished appears very matte. When the paintings were re-varnished as the artist intended (right), the proper saturation returned and the richness of the artist's use of color could be fully appreciated

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