How Much Fragrance Oil Should You Use in Candles?
One of the biggest beginner mistakes in candle making is assuming that more fragrance oil automatically means a stronger candle.
Unfortunately, it doesn’t work that way.
Fragrance strength depends on balance—between wax type, fragrance load, wick selection, and proper testing.
Let’s break it down simply.
What Is Fragrance Load?
Fragrance load refers to the percentage of fragrance oil added to wax in a candle recipe.
Most candles typically fall within:
- 6% to 10% fragrance load (depending on wax type)
This range helps ensure the fragrance is properly bound to the wax and burns correctly.
Why More Oil Isn’t Always Better
It’s easy to think adding extra fragrance will boost scent throw, but too much can actually cause problems.
Overloading fragrance oil can lead to:
- Sweating (oil pooling on the surface)
- Poor or uneven burns
- Oil separation from wax
- Reduced hot throw performance
More fragrance doesn’t always equal better results—it often creates instability instead.
How to Calculate Fragrance Oil
Fragrance load is based on the weight of your wax.
Example:
If you are using 1 pound of wax:
- At 8% fragrance load, you would use approximately 1.28 oz of fragrance oil
This keeps your formula balanced and within safe performance ranges.
Hot Throw vs Cold Throw
Understanding scent performance also helps you set realistic expectations.
Cold Throw
How the candle smells when it is unlit.
Hot Throw
How the candle smells while it is burning.
A candle can have a strong cold throw but still perform poorly when burning if the formula isn’t balanced.
Best Beginner Tip
If you’re just starting out, a great baseline is:
- Start around 8% fragrance load
- Test performance thoroughly
- Adjust slightly based on wax and fragrance results
Small adjustments often make a big difference.
Final Thoughts
Strong candles aren’t created by adding more fragrance—they’re created through balance, testing, and proper formulation.
When you understand fragrance load and how it affects performance, you gain much more control over scent throw and overall candle quality.
