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The Perfect Recipe for Fragrance Oil Candle Making

  • 5 min read

Just like there is a science to baking the perfect cake, so to is the art of candle making. Like all delicious gateaus and tarts, there are a number of factors and layers that go into making the perfect fragrance oil scented candle. 

By far, one of the most crucial elements to making the perfect scented fragrance oil candle is weighing the fragrance that is to be blended with the candle wax. It makes perfect sense doesn’t? How can you bake a cake without the correct weight of flour, sugar, butter etc? Well, you can but high chances are it will not rise, nor will it be deliciously edible and, you’ll probably end up not taking it to work for morning tea with your colleagues and toss it out.

pipette dropping fragrance oil into a glass bottle

By weighing the fragrance oil for your scented candle, you will have a superior candle product that is consistent and each time the candle is burned, it will result in the same quality scent throw. This fragrance oil consistency is extremely important for customer satisfaction and brand loyalty. Consumers want to be confident in knowing that they are buying the same exact candle every time they purchase it. 

Generally speaking, scented candles tend to contain between 3% to 12% amount of fragrance oil. Of course, the percentage differs depending upon what fragrance oil you are using and what strength of fragrance scent throw you are wanting to achieve.

Some fragrance oils are quite robust and strong whilst others are more subtle and delicate. 

The amount of fragrance oil you use for creating your scented fragrance oil candle will also depend upon the strength of scent throw you require and, the environment in which the candle will be burned. For example, a stronger fragrance oil candle blend may be needed for a hotel reception that constantly has doors being opened inside and out versus a fragrance oil candle required to burn in your bathroom as you enjoy a relaxing bath at home. As such, a lot of time and experimentation can go into perfecting the perfectly blended fragrance oil amount best suited for your candle making.

Five Simple Steps to Weighing Fragrance Oils for Candle Making

pouring melted wax on a scale

Step 1. Use an accurate digital scale

Step 2. Weigh out the quantity of the wax that you want to melt for your fragrance oil candle

Step 3. Use a glass vessel, tether it and reset to zero so your not weighing the glass vessel as well and, carefully pour the required amount of fragrance into it. 

Step 4. Once you have the correct weight, melt your wax and pour the fragrance oil into it and mix together

Step 5. Allow the candle to set and cool

It’s very important to note that if you are going to start to make and produce larger batches of fragrance oil candles, then you need to ensure you use the correct weight of fragrance oil. 

For example, you will need to alter the fragrance oil amount so that it is relative to the amount of wax you are melting. 

Whilst researching the weight of fragrance oil required to make your scented candle, you may come across the industry term ‘Fragrance load’. ‘Fragrance load’ simply means the percentage of fragrance oil you will mix into your candle vessel along with your chosen candle wax. ‘Fragrance load’ is always expressed as a percentage. How do you work out what percentage of fragrance oil to use? To make sure this is accurately done, there is a simple sum you can follow.

If you’re going to make 10 candles and they each will weight 300 grams and 6% fragrance oil you simply work it out as;

300 grams x 10 = 3,000 grams

3000 x 0.06 = 180 grams of fragrance oil.

3,000 – 180 = 2,820 grams of wax

By following this very simple sum, you’ll always have the same consistent fragrance oil candle regardless of how many candles you make or, what size candle they may be. 

Be aware however, that you don’t ever mix up your measurements of fragrance oil in milliliters and your candle wax in grams. You need to select one or the other form of measurement so that the fragrance oil percentage added to your wax will be correct every-time. It’s a simple mistake to make when you’re first starting out candle making however, it can be costly so always double check.

Top Five Do’s and Don’ts When Weighing Fragrance Oils for Candle Making

measuring melted soy wax on digital scale

DO - always weigh your fragrance oils using a trusted and precisely calibrated digital scale and not a traditional balance sale or measuring spoons or cups. This will ensure the most accurate blend for your fragrance oil mixture as some fragrance oils are more naturally denser than others and, the sensitivity of the electric scale allows for optimum quality control of volume.

DON’T - ever measure your fragrances for candle making in a plastic vessel. Undiluted fragrance oils and essential oils can actually deteriorate some plastic surfaces. This could result in contamination of your fragrance oil which, will impact the quality of your candle. Always store and weigh your fragrance oils for candle making in sterile glass in order to prevent any tainting of your blend for candle making.

DO - be aware that if you are going to make a large number of candles at once, you will need to alter the amount of fragrance oil being used so that it is relative to the amount of wax. As such, always be clear on the percentage of fragrance oil you are using versus the grams of wax the fragrance oil will be blended with.

DON’T - get your fragrance load percentage incorrect! Always double check your measurements as this can result in costly errors and candles that can’t be sold as they are either too overpowering or, too weak when it comes to their scent throw.

DO - be aware that all the other ingredients in your fragrance oil candle are the same. For example, that the manufacture of your wax has not changed their recipe or that your fragrance oil supplier has sourced their fragrance from a different location etc as, this will no doubt impact your fragrance oil candle.

Fragrance Oil Impact on Your Soy Wax

Every fragrance oil you use in creating your fragrance oil candle will affect your soy wax differently.  For example, you may find one particular fragrance oil scent causes your wax to ‘curdle’ or set lumpy and uneven. This is not an uncommon result whilst experimenting with your fragrance oil blend. In most cases it’s just a matter of if and when this happenw, decrease the percentage of your fragrance load. This may take several attempts until you achieve that perfect blended balance. Another note to point out is to make sure you add your fragrance oil to your soy wax at the correct temperature. This will help the oil bind to the wax and give you a more consistent scent throw.

There are many different variables that can affect the quality of your fragrance oil candle just like there are in baking a cake. However, by controlling the fragrance load by using accurate scales and measurements and knowing your ingredients are consistence and of top quality, you’ll end up with the perfect candle making recipe.