WOCA Tannin Spot Neutralizer effectively removes black spots caused by acid/water reaction.
Ready mixed
Simple application
For small areas
Requires additional treatment
WOCA Tannin Spot Neutralizer effectively removes black spots caused by acid/water reaction. This product can be used on unfinished, soaped, oiled or waxed interior surfaces. Oak wood naturally contains a very high amount of tannic acid. Black spots are formed when the wood is exposed to metal and moisture.   Leaving a wet glass, or a leaky vase can trigger a chemical reaction from the acid in the wood and the water.  This reaction leaves an undesired black spot.