Cool Tools Patina Gel is liver of sulfur in a stabilized gel form. Not only is it the most convenient, easiest way to use liver of sulfur, but amazingly it does not degrade in light and air the way dry and liquid liver of sulfur does. Cool Tools Patina Gel is economical. Use only what you need with our no-mess dispenser spout. No more digging for the "right sized chunk" or wasting pieces that are too large. No more throwing out a whole container because the lid was not on just right. Patina Gel is always fresh and always ready to use, and just a few drops is all you need. Cool Tools Patina Gel is safe. Ordinary lump sulfur is flammable. Cool Tools Patina Gels unique chemistry makes it non-flammable and safe for international shipping.