US Dollars
Not Getting a Strong Scent from Your Candle?
One of the most common questions candle makers ask is, “Why doesn’t my candle smell very strong?” Whether you’re dealing with weak hot throw, weak cold throw, or both, don’t get discouraged. Nearly every candle maker experiences this during product development.
Make Sure You’re Using the Right Wick
Your wick is the engine of your candle. It controls the flame size, melt pool, burn temperature, and ultimately how effectively fragrance is released into the room.
Your wick may be too small if you notice:
- Weak hot throw
- A shallow melt pool
- A small or struggling flame
- The wick drowning in melted wax
Try this: Increase your wick size by one or two steps and compare the results.
Your wick may be too large if you notice:
- An oversized flame
- Excessive soot
- Overheating
- An overly deep melt pool
- Fragrance burning off too quickly
Try this: Test a wick that is one or two sizes smaller.
Maker Tip
Every wax, fragrance oil, dye, container, and wick combination can behave differently. Even a formula that worked beautifully with one fragrance may need a different wick when you switch scents.
Don’t Assume More Fragrance Means More Scent
One of the biggest candle-making misconceptions is that adding more fragrance oil automatically creates a stronger candle. In reality, too much fragrance can reduce performance rather than improve it.
Many waxes perform well with a fragrance load somewhere between 6% and 10%, but the correct amount depends on the wax you use. Always follow your wax manufacturer’s recommended fragrance allowance.
Too much fragrance oil may cause:
- Poor wick performance
- Weak or inconsistent hot throw
- Sweating or oily candle tops
- Difficulty achieving a proper melt pool
Too little fragrance oil may cause:
- Weak cold throw
- Weak hot throw
- A candle that does not project well
- Fragrance that is difficult to detect beyond the candle
Some heavier fragrance oils, including rich bakery and gourmand scents, may perform better at a moderate fragrance load instead of the maximum amount your wax can hold.
Try a Fragrance-Load Test
Make small test candles at several fragrance loads, such as 6%, 8%, and 10%, provided those percentages fall within your wax manufacturer’s recommendations. Keep every other variable the same so you can clearly compare the results.
Test in an Appropriately Sized Room
Sometimes the candle isn’t the problem—the testing environment is. Even an excellent candle has limits, and a small candle is not designed to fragrance a large, open-concept living area.
Large rooms and open floor plans may require multiple candles or additional scented products to fragrance the space effectively. Testing in a room that matches the candle’s size will give you a much more accurate picture of its performance.
These room-size suggestions are general testing guidelines. Results will vary depending on the candle formula, ceiling height, airflow, room layout, and fragrance.
Test Your Candle Correctly
Many makers unknowingly evaluate scent throw incorrectly because of olfactory fatigue, commonly called nose blindness. After you spend time in the same room, your brain naturally begins filtering out familiar smells. This can make a well-performing candle seem weaker than it actually is.
A Better Way to Evaluate Scent Throw
Place the candle in an appropriately sized room.
Light the candle and allow it to begin developing a melt pool.
Leave the room and close the door behind you.
Return after one to two hours.
Evaluate both the fragrance strength and the candle’s burn performance.
Stepping away between evaluations gives your sense of smell time to reset, helping you form a more accurate impression of the candle’s fragrance strength.
Review Your Candle-Making Process
Even with the right wick and fragrance load, inconsistent manufacturing techniques can reduce both hot and cold throw.
Review your wax manufacturer’s instructions and make sure you are consistently following its recommendations for:
- Wax melt temperature
- Fragrance addition temperature
- Pour temperature
- Stirring time
- Cooling conditions
- Cure time
Many soy and coconut wax blends are especially sensitive to changes in temperature and cooling conditions. Using the same process for every batch makes it easier to troubleshoot problems and reproduce successful results.
Don’t Rush the Cure
A candle may smell different after it has had time to cure. Follow your wax supplier’s cure-time recommendations before making a final judgment about scent throw.
Remember That Every Candle Is a Complete System
A successful candle is not built around just one component. Its performance depends on how every part of the formula works together.
Changing even one of these variables can change the way the entire candle burns and releases fragrance.
Change Only One Variable at a Time
- Test one wick size larger.
- Test one wick size smaller.
- Adjust the fragrance load.
- Compare different cure times.
- Record the melt pool, flame, soot, and scent throw.
Keep detailed notes throughout your testing process. Good records make it easier to identify what works, reproduce successful formulas, and avoid repeating unsuccessful combinations.
Final Thoughts
Weak hot throw or cold throw does not necessarily mean you’ve done something wrong. Candle making is both an art and a science, and exceptional performance often comes from patient testing and small, thoughtful adjustments.
With consistent methods, quality ingredients, and careful recordkeeping, you’ll discover the combination that delivers the fragrance performance you’re looking for.
Every test teaches you something—and each one brings you closer to creating a candle you’ll be proud to share.