Eugene Holtie Clear Oil Varnish, 50ml. Clear Oil Varnish by Eugene Holtier, 50ml. Made from the finest colophony and cold-pressed linseed oil. Rich in color and very transparent. The varnish is medium thick but easily spreads and isn't very tacky, which attracts less dust. One bottle will do 4 violins or 1 cello. Pigments or oil painting color can be used to customize your hue.