Fragrance Load Guide: How Much Fragrance Oil to Use in Candles
January 12, 2025 • 9 min read
Getting your fragrance load right is essential for achieving optimal scent throw in your candles. Too little and your candles won't smell, too much and you risk sooting, poor burn performance, and wasted money. This guide teaches you the exact percentages and calculation methods for perfect fragrance loads every time.
What is Fragrance Load?
Fragrance load is the percentage of fragrance oil compared to the total weight of wax in your candle. It's calculated as:
Fragrance Load % = (Fragrance Weight ÷ Wax Weight) × 100
Example: 1.0 oz fragrance ÷ 10 oz wax = 10% fragrance load
Recommended Fragrance Load by Wax Type
Soy Wax: 6-10%
Sweet spot: 8-9% for most soy waxes
Light scents: 6-7% (citrus, herbal)
Strong scents: 9-10% (vanilla, cinnamon)
Soy wax has a maximum fragrance load of around 10%. Going higher can cause wet spots, poor adhesion to the container, and sooting. Always check your specific wax manufacturer's recommendations.
Paraffin Wax: 8-12%
Sweet spot: 10% for most paraffin waxes
Standard range: 8-10%
Maximum: Up to 12% for strong scents
Paraffin can handle higher fragrance loads than soy, making it popular for maximum scent throw. However, higher loads require careful wick testing to prevent mushrooming and sooting.
Coconut Wax: 8-12%
Sweet spot: 10% for premium scent throw
Range: 8-12% depending on blend
Coconut wax naturally provides excellent scent throw, so you can often use slightly less fragrance oil while still achieving strong cold and hot throw.
Beeswax: 3-6%
Maximum: 6% (rarely scented)
Note: Most beeswax candles are sold unscented to preserve the natural honey aroma
How to Calculate Fragrance Oil Amount
Here's the step-by-step process for calculating fragrance oil:
- Determine your wax amount (example: 10 oz)
- Choose your fragrance load percentage (example: 10%)
- Calculate: 10 oz wax × 0.10 = 1.0 oz fragrance oil
- Total candle weight: 10 oz wax + 1.0 oz fragrance = 11 oz total
Use Our Free Fragrance Calculator
Our Fragrance Calculator instantly calculates the exact amount of fragrance oil needed for any candle size and percentage. Results shown in both ounces and grams.
Common Fragrance Load Mistakes
- Using too much: Causes sooting, poor burn, wet spots, and wastes expensive fragrance oil
- Using too little: Results in weak or no scent throw
- Ignoring wax limits: Each wax has a maximum fragrance capacity
- Not testing: Different fragrances behave differently at the same percentage
- Measuring by volume instead of weight: Always weigh fragrance oil for accuracy
Blending Multiple Fragrances
When blending multiple fragrance oils, the total fragrance load is the sum of all fragrances:
Example for 10 oz wax at 10% total fragrance:
- 0.7 oz Vanilla (70% of blend) = 7% of wax
- 0.3 oz Lavender (30% of blend) = 3% of wax
- Total: 1.0 oz fragrance = 10% load
The Candle Cost Calculator supports blending up to 8 different fragrance oils with custom percentages. It:
- Automatically calculates amounts for each fragrance in your blend
- Tracks costs per fragrance oil
- Shows measurements in ounces and grams
- Ensures your total fragrance load is correct
Tips for Maximum Scent Throw
- Add fragrance at the right temperature: 185°F for soy, 175-185°F for paraffin
- Cure your candles: Wait 1-2 weeks before testing for best scent throw
- Choose quality fragrance oils: Candle-specific oils perform better than general fragrance oils
- Test thoroughly: Different fragrances have different throw strengths
- Use the right wick: Proper wicking ensures the fragrance is released effectively