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FRAGRANCE OIL
Candle Math: Fragrance Oil
Ah, candlemakers first set of questions are typically how do I calculate the fragrance load. This too, was one of my first questions and through the years, I’ve learned a great deal in this topic area. Thus, below I’ll walk you through the steps of calculating the fragrance load in three easy steps. Also, don’t forget to convert your ounces into grams at the end, it’s typically a bit more accurate for testing and production.
Step One: Wax Weight
The first thing you’ll want to do is figure out the wax weight of your candle. Let’s use an 8oz candle for this example.
Step Two: Fragrance Oil
Next, figure out how much fragrance oil you want to add to your candle. The fragrance oil is calculated as a percentage and the typically percentages are between 6–10%, although you’ll find some waxes can hold up to 12%. However, while sometimes a higher fragrance load can be correlated with a stronger hot throw (how strong a candle smells when you burn it), that isn’t always the case and it is possible that too much fragrance oil can result in a poor performance of your candle. Typical rule of thumb is to start with 6% and work your way up from there, but 8% is a common number that most chandlers land on as well. For our example, we’ll use 6%.
Step Three: Let's Multiply!
My favorite part in the process and I have a trick that will hopefully make this step a bit easier for you. I’ve always been a fan of math and candle math isn’t any different. However, I digress, let’s get to the numbers. For the next step of the process, you’ll want to multiply your candle weight by your fragrance load to get the amount of fragrance oil needed for your candle, wax melt, or any bath and body product.
Ex. 8 x 6% = .48
In this example, the amount of fragrance oil you’d need to add for an 8oz candle is .48 ounces. Also, keep in mind that every time you complete this calculation, the unit of measurement will always be in ounces, unless you convert it to grams, which is what I would recommend.
Now, time for the trick that’ll help you do this quickly without a calculator. Most of us know simple, basic math and you’ll need that for this. If you know the answers to the following equations:
4 x 6 = 24
6 x 10 = 60
10 x 8 = 80
You also know the answer to these questions.
4 x 6% = .24
6 x 10% = .60
10 x 8% = .80
In the example above, to calculate the percentage, all you’d need to do is add the decimal to tens place and voila, you have your fragrance load! I hope this helps those who like a little math as well and if you still need the calculator, there’s nothing with that either! As long as you’re able to understand fragrance loads, my job here is completed.
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