SureHard LS is a clear, water-based, liquid-chemical, lithium silicate hardening & dustproofing solution. SureHard LS penetrates deeper into the surface than a sodium silicate, and reacts with the lime to form a hard, insoluble gel within the pores, thus closing the small voids to penetration by foreign matter making it denser and harder. As a result, SureHard LS is naturally anti-microbial. Surfaces treated with SureHard LS are not only more abrasion resistant, but have increased resistance to many chemicals. Because SureHard penetrates into the surface and chemically reacts with it, the effects of the treatment will last many years. SureHard LS is water-based so it is a very safe and VOC compliant product. *Product images are representative only.