I didn't add anything. I just melted 1 lb pb wax, then poured into votive molds. One batch I scented, and another batch I added 1 oz of CS Buttercream FO. When I did test burn, I didn't smell buttercream, so am playing with wicks. Thus far, LX 14 burns slow with small flame. The LX 16 was too big, big flame, burned fast. Eco 2 was too small. Eco 4 burned well with good flame, but no smell. I bought 10 lb. bag of the PB, so still experimenting. Believe me, I wasted some product with the jars, now here I go again with the votives. But at least I am having fun.