Varnishing p. pr. & vb. n. : of Varnish

Varnishing n. : The act of laying on varnish; also, materials for varnish.

Example:


Taxonomy
varnishes, oils, resin, solvent, shellac, polyurethane, alkyds, turpentine, Lacquer, alcohol, heat, spar varnish, finishes, paints, evaporation, cure, polyurethane varnish, drying oil.

Defination from the web:
Varnish is traditionally a combination of a drying oil, a resin, and a thinner or solvent. ... Resin varnishes "dry" by evaporation of the solvent and harden almost immediately upon drying. ... The drying and curing time of all varnishes may be sped up by exposure to an energy source ...