Using a blend of paraffin and vegetable wax together with the maximum percentage of fragrance recommended, the candles are hand poured to produce both a beautiful hot and cold scent throw. The stainless steel lid provided with the candle is for several purposes. It may be placed under the glass container when lit in order to protect the surface from heat produced. When you wish to extinguish the flame simply replace the lid over the candle, but do remember to trim the wick before you begin the next burn. The lid when used will also stop any dust gathering on the candle and will hold in the scent for longer.