It is important that the fragrance oil binds and mixes completely with the melted wax. For this reason, we recommend always adding fragrance oil to your wax at 185°F, regardless of the flashpoint of the fragrance oil. This is the optimal temperature for the fragrance and the wax to bind together, which will provide the best fragrance throw in your finished candle. We have confirmed this through rigorous testing in our in-house labs. Adding fragrance to your wax at lower temperatures can result in the fragrance not binding properly with the wax. This would negatively impact the scent throw, and in a worst-case-scenario, cause the fragrance to leach out of the wax and pool on the top or bottom of your candle.
The pouring temperature (the temperature at which you pour the fragranced wax into the container) will depend on the type of wax you're using. Be sure to check the wax product page for the pouring temperature for your specific wax.