Antonio Mcgowan
Adding fragrance oil to candles is a fun way to make your candles stand out. However, adding fragrance oil to your wax when it is too hot or too cold can affect the potency of the fragrance, resulting in wax that has little to no scent when burning. The ideal temperature for adding fragrance oil is dependent on the wax you are using. For example, if you are using soy wax, it is recommended to begin mixing once the wax hits about 155° - 165° F. It is also important to note that each wax has a recommended fragrance oil load and going beyond that limit can be a fire hazard.
When to Add Fragrance Oil to Candles
| Characteristics | Values |
|---|---|
| Wax temperature | 155°-165° F for soy wax, 180°-185° F for soy and paraffin wax, 200°-205° F for palm wax |
| Wax state | Fully melted |
| Fragrance oil temperature | Below the flash point of the fragrance oil (usually 50°-55° C) |
| Amount of fragrance oil | 6% - 8% for optimal scent throw, 10% maximum, 6%+ for a subtle scent throw |
| Stirring time | Short |
| Cooling time | Slow |
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What You'll Learn
The temperature of the wax
Most waxes fully melt at around 175°-185° F (79°-85° C). However, the ideal temperature for adding fragrance oil is slightly lower, typically between 155°-165° F (68°-74° C). This allows the oil to bind effectively with the wax, resulting in a stronger scent. For waxes with a lower melting point, such as soy wax, the ideal temperature for adding fragrance oil may be even lower, around 130° F (55° C).
It is important to note that the flash point of the fragrance oil should also be considered. The flash point is the temperature at which the fragrance oil becomes combustible. Adding the fragrance oil below its flash point, typically between 50°-55° C, is crucial to avoid the risk of combustion when lighting the candle.
The type of wax used also plays a role in determining the ideal temperature for adding fragrance oil. For example, soy and paraffin wax typically require a temperature of 180°-185° F (82°-85° C), while palm wax requires a higher temperature of 200°-205° F (93°-96° C).
Additionally, it is important to avoid adding too much fragrance oil, as this can impact the stability of the candle and cause issues such as sweating and curdling. The recommended fragrance load can vary depending on the type of wax and fragrance oil used, but typically ranges from 6% to 10% for optimal scent throw without compromising stability.
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The type of wax
Paraffin Wax
Paraffin wax is one of the most popular choices for candle-making, especially for scented candles. It is known for its affordability and versatility. It has an excellent scent throw, meaning it can carry strong fragrances. Paraffin wax also comes in various melting points, allowing candle-makers to create different types of candles, from votives to pillars and container candles. However, it is important to note that paraffin wax releases toxins and is not an eco-friendly option.
Soy Wax
Soy wax is a budget-friendly option and is often used for large batches of candles. It tends to burn longer than paraffin wax, offering extended enjoyment from each candle. Soy wax is also suitable for blending with other waxes like coconut wax to create high-quality candles.
Beeswax
Beeswax has been a popular choice for candle-making for centuries. It burns very well and releases negative ions, which are thought to neutralise pollutants and purify the air. Beeswax is a good option if a clean burn is a must-have for your finished product. However, its natural scent can be disruptive when mixed with essential oils or fragrance oils.
Coconut Wax
Coconut wax is a natural and renewable option, harvested from coconuts without any extra chemicals. It is often mixed with soy or beeswax to create a solid form suitable for candles. Coconut wax holds fragrances and colours well, making it a good choice for decorative candles. It also burns slowly and is biodegradable.
Rapeseed Wax
Rapeseed wax is a sustainable, vegan-friendly, and eco-friendly option derived from rapeseed oil. It burns cleanly with minimal soot production and is great at retaining fragrances, making it ideal for scented candles. Rapeseed wax is also suitable for blending with other waxes to achieve the desired consistency.
Palm Wax
Palm wax has gained popularity in recent years due to its clean-burning and eco-friendly properties. It is harder than other waxes, making it suitable for freestanding candles like pillars. Palm wax is also unique in its ability to create stunning crystalline and feathered textures, adding a decorative touch to the candle.
Gel Wax
Gel wax is not a natural wax but a mix of resin and mineral oil. It is typically used for wax melts, container candles, or votive candles. A firmer gel wax is available for making pillar candles. Gel wax allows for transparency, making it perfect for creating candles with embedded objects or layered designs. However, it is important to note that gel wax releases toxins during burning.
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The amount of fragrance oil
The flashpoint of the fragrance oil is the temperature at which the oil becomes combustible. This is an important consideration when adding fragrance oil to your candle, as the oil must be added below this temperature to avoid combustion. The flashpoint of fragrance oils varies, but it is generally between 130°F and 180°F.
The type of wax you are using will also determine the amount of fragrance oil you should add. For example, soy wax typically requires a lower fragrance load than paraffin or palm wax. The recommended fragrance load for soy wax is 6%-8%, while paraffin and palm wax can accommodate up to 10%.
It is important to note that using more fragrance oil does not always result in a stronger scent. Adding too much fragrance oil can cause it to separate from the wax, creating an uneven and potentially hazardous candle. It can also clog the wick, resulting in a weak scent throw. Therefore, it is crucial to follow the recommended fragrance load for the specific type of wax you are using.
When adding fragrance oil to your candle, it is best to add it gradually and mix thoroughly to ensure an even distribution. Stirring for too long can cause the fragrance oil to settle at the bottom, so it is important to work quickly and efficiently.
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The flashpoint of the oil
The flashpoint of a fragrance oil is the temperature at which the oil becomes combustible. In other words, it is the temperature at which the oil can ignite if it comes into contact with an open flame or spark. This is an important concept to understand when adding fragrance oils to candles, as it can affect the safety, scent, and overall burn performance of the final product.
The flashpoint of a fragrance oil can impact the scent retention in a finished candle. If the wax is hotter than the oil's flashpoint when added, the fragrance's volatile top notes can evaporate, resulting in a weaker scent. Fragrance oils with higher flashpoints tend to have better scent retention, as they evaporate more slowly during burning, gradually releasing the fragrance. However, this does not mean that low flashpoint fragrances should be avoided. With careful selection of wax type and wick, candles made with low flashpoint fragrances can still have desirable scent retention and burn performance.
It is important to note that adding too much fragrance oil to the wax can be a potential fire hazard. If overloaded with fragrance oil, the wax can separate, leaving "dew drops" on the candle's surface. Therefore, it is crucial to follow the recommended maximum fragrance oil retention for the specific type of wax being used. Additionally, it is recommended to allow the wax to cool slightly before adding the fragrance oil, as adding the oil when the wax is too hot or too cold can negatively impact the potency of the fragrance.
The ideal temperature range for adding fragrance oil varies depending on the type of wax being used. For soy wax, the recommended temperature range for adding fragrance oil is 155°-165° F, while for paraffin wax, it is 180°-185° F, and for palm wax, it is 200°-205° F. It is important to know the melting point of the wax and ensure that the wax has fully melted before adding the fragrance oil.
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The strength of the scent
The temperature at which the fragrance oil is added to the wax is crucial to achieving the desired scent strength. If the wax is too hot or too cold, it can negatively affect the potency of the fragrance, resulting in a weak scent. Therefore, it is important to add the fragrance oil when the wax is within the optimal temperature range for the specific type of wax being used. For example, soy wax typically requires fragrance oil to be added at a lower temperature than paraffin wax.
The flashpoint of the fragrance oil is another critical factor. The flashpoint refers to the temperature at which the fragrance oil becomes combustible, and it is important to add the oil at a temperature below this point. Adding the oil at the recommended flashpoint will help to ensure safety and avoid the risk of combustion.
Additionally, the strength of the fragrance oil itself plays a role in determining the final scent strength of the candle. Some fragrances are naturally stronger than others, and may require less oil to achieve the desired scent throw. For example, scents like vanilla, sandalwood, oudh, and caramel are known to be stronger and may only need a 6% fragrance load.
It is worth noting that adding too much fragrance oil can be counterproductive. Not only can it create an unpleasant smell, but it can also cause issues with the candle's performance, such as clogging the wick or creating unsightly "gooey" spots. Therefore, it is important to follow the recommended fragrance load for the specific type of wax and fragrance oil being used.
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Frequently asked questions
The ideal temperature for adding fragrance oil is when the wax is fully melted. This is usually between 175°- 185° F. However, it is recommended to add the fragrance oil when the wax temperature drops to 155°- 165° F. This ensures that the oil binds well with the wax, resulting in a stronger scent.
The amount of fragrance oil depends on the type of wax, the flashpoint of the oil, and the desired scent strength. Most waxes can hold up to 12% fragrance oil, but 10% is recommended for optimal scent throw and stability. For a subtle scent, 6% or more can be used.
No, it is not recommended to use essential oils or perfume as fragrance oils in candles. Essential oils are flammable and can be harmful to certain individuals. Perfume is also not meant to be burned and can compromise the stability of the candle. Always use fragrance oils specifically designed for candle-making.
