All natural triple pressed stearin is used in candles for hardness and to help reduce sweating of your candles.
Stearin isn't necessary to add to all of your candles, only use if you are experiencing sweating in hot climates.
Melt your stearin with your wax to at least 80 degrees and mix well. Add dyes and fragrance to your wax before pouring. Recommended usage is 1-3%.