ZINSSER® B-I-N® ADVANCED SYNTHETIC SHELLAC PRIMER, WHITE GALLON CAN – 270976 B-I-N® ADVANCED SYNTHETIC SHELLAC PRIMER IS A SYNTHETIC SHELLAC-BASED PRIMER SEALER THAT PROVIDES EXCELLENT STAIN BLOCKING FOR WHOLE-SURFACE INTERIOR PRIMING AND EXTERIOR SPOT PRIMING. IT COMBINES FAST DRY TIME, LOW ODOR, EXCELLENT HIDE AND STAIN BLOCKING FOR NEW CONSTRUCTION, REMODELING AND FIRE AND WATER RESTORATION. SUPERIOR ODOR SEALING. ULTIMATE STAIN BLOCKING. HIGH HIDING BRIGHT WHITE. EXCELLENT ADHESION. ENAMEL HOLD OUT. SEALS KNOTS, SAP AND TANNIN.