PPC Shield LS Densifier is a zero-VOC, ready-to-use permanent penetrating densifier that seals, hardens, and dustproofs new and existing concrete surfaces. This environmentally friendly, single-component spray-applied treatment penetrates deeply to increase surface durability, reduce permeability, and eliminate dusting — extending the life of concrete by decades. UV stable and non-toxic, it will not yellow, peel, or degrade over time. The Shield LS Densifier carries a 20-year dustproofing warranty and is certified UL GREENGUARD Gold, LBC Red List Free, and Buy American Act compliant. It can be installed as early as five days after concrete placement.