| Answer | Crossword Clue |
|---|---|
| LAC | Varnish substance |
| shellac | substance used in varnish |
| DRIER | Substance added to paint and varnish |
| sealer | substance applied to a porous surface as a basecoat for paint, varnish, etc. |
| sealers | substance applied to a porous surface as a basecoat for paint, varnish, etc. |
| propolis | A red or brown resinous substance collected by honeybees from tree buds, used by them to fill crevices and to seal and varnish honeycombs |
