Hello! Thank you for watching and commenting! Every wax has its own melting point. I use a blend of wax that has a melting point of around 130 degrees f. All fragrance oils have a Flashpoint, meaning if you pour it into wax that is at a temperature higher than the Flashpoint, the fragrance oil will burn off the mixture, which is not good. Once I've mixed the wax and fragrance oils together, I then consider what I'm pouring the mixture into. These banana molds are made of silicone, which can withstand higher temperatures. I usually pour into my silicone molds when the wax is somewhere between 140 and 165 degrees f. I hope this helps! Please feel free to reach out if you need anything!