These self lighting tablets are necessary if you intend to use resin incenses or incense powders. To use, simply light the edge of the charcoal with a lighter or match, then place the tablet in a fire proof incense burner. The charcoal will within minutes will become hot, at this time place the resin on the tablet. As the incense burns, the fragrance is released. This product is supplied in an air tight foil bag to ensure freshness. 10 tablets per roll.