Before you start adding fragrance to your molten wax, you should understand a fragrance's flash point.
A Fragrance flash point refers to the temperature at which the scent will evaporate, and the vapours become combustible.
This is important for two reasons. The first being safety. The flashpoint is the temperature at which a fragrance can combust if exposed to an open flame or spark. However, if you are adding fragrance oil (at room temperature) with no open flame, to molten wax that you have heated above the flashpoint this is no cause for concern. All our fragrances are tested to determine the flashpoint, and these are provided within the speciation documents accompanying each fragrance upon dispatch. Generally, all our fragrance flashpoints are above 70 degrees Celsius. The higher the flashpoint, the less flammable, or less risk of ignition there is.
The other reason for understanding the flashpoint of a fragrance is to consider your production methods to maximise the throw of the finished product.
For example, if your fragrance oil has a flash point of 70 degrees Celsius and you add it to wax at 85 degrees Celsius, the top notes of the fragrance will evaporate quickly and weaken the fragrance and an altered profile will be the result. When heating your wax, adhere to your wax specifications to only heat to the temperature required to maintain a liquid state. Avoid maintaining a highly heated wax with fragrance added for a prolonged period as you will alter the fragrance profile.
There is always a balance to achieve with mixing temperatures as you want to maintain the integrity of your fragrance oil, however you also need to ensure adequate wax temperatures for consistent mixing of fragrance throughout the wax batch.
Waxes, just like fragrance oils have various melting points. Testing is the key to determine the best method of mixing that is right for your products.