Staff Answer
Mar 11, 2024 - 04:37 AM
Per the Tech Information under the Downloads on the right side of the product page, https://www.greenbuildingsupply.com/c... , "Product Description: BioShield Herbal Oil is a penetrating oil primer/sealer made from raw flax oil. It is used for absorbent hardwoods as well as soft woods. As a wipe-on finish the product is also suitable for less absorbent stone, slate and concrete surfaces. "
