Stearin ensures shrinking and strengthens the candle. Also it improves its fire properties. Add 5 - 15% stearin to the casting wax during the production. This will simplify the removal of the candle from the mold as well as it makes the candle stronger and whiter. Many candle producers use their own recipe. Stearin can also be used purely which gives the candle a beautiful "stone effect"; heat the stearin up to 65°C, add the desired color pigment (0,1 - 0,3%) and pour in a silicon mold. For this addition one always needs a special stearin wick! When colored dining candles are dipped in pure stearin (75°C), it will give the candle an amazing crackle effect. Never process pure stearin in materials of aluminum.