Let’s Unpack That Claim

If you’ve been candle-making for more than five minutes, you’ve probably come across some pretty bold claims from wax suppliers. One of the latest? A soy wax that can “hold up to 20% fragrance.” Sounds amazing, right? Twice the scent throw, twice the luxury… right? Not quite. Let’s break it down.

What “Fragrance Load” Really Means

Fragrance load is the percentage of fragrance oil mixed into your wax, compared to the weight of the wax. Most reputable soy waxes perform beautifully at 6–10%, sometimes up to 12% if conditions are just right. This range ensures the wax binds the fragrance, burns cleanly, and gives you the best scent throw possible. Not sure how that translates to your own batch size? Here's a simple way to calculate exactly how much fragrance you need.

The 20% Myth

Yes, you can pour 20% fragrance oil into melted soy wax, just like you can pour an entire litre of milk into your morning coffee. But that doesn’t mean you should. Beyond 12%, the wax simply can’t bind the excess oil. What happens then?

• Sweating: Puddles of unbound fragrance oil rise to the top.

• Wick clogging: Too much oil chokes the wick, leading to tunneling or self-extinguishing candles.

• Inconsistent performance: Hot throw may actually weaken, because excess oil interferes with combustion.
  

• Safety concerns: Free-floating fragrance oil increases fire risk.

In short, the candle becomes unstable, unattractive, and in some cases unsafe.

Why Do Companies Make This Claim?

It’s clever marketing. “Up to 20% fragrance” sounds like their wax is more powerful or advanced than competitors. In reality, it’s like bragging your car’s petrol tank can hold 300 litres if you fill the back seat with jerry cans. Technically true, but utterly impractical.

The Reality for Candle Makers

Professional chandlers know: more isn’t always better. The quality of the wax, the compatibility of the fragrance, the wick choice, and the cure time all matter far more than trying to force in extra oil. The real “magic number” is the one that balances performance, safety, and a luxurious scent throw and for soy wax, that’s comfortably in the 6–10% zone.

Final Thoughts

When you see suppliers advertising claims like “20% fragrance load,” take it with a grain of salt. Or better yet, with a big scoop of wax. A well-formulated candle doesn’t need inflated numbers to deliver a beautiful hot throw, it just needs balance, science, and a little bit of patience.

Frequently Asked Questions

What is fragrance load in candle making?

Fragrance load is the percentage of fragrance oil mixed into your wax, measured against the weight of the wax. It is one of the key factors in how a candle performs, but it is only one part of the picture alongside wick choice, wax quality and cure time.

How much fragrance can soy wax actually hold?

Most reputable soy waxes perform best at around 6 to 10 percent, sometimes up to 12 percent in the right conditions. Within this range the wax binds the fragrance properly, burns cleanly and gives the best scent throw.

Can I really add 20 percent fragrance to soy wax?

You can physically pour it in, but that does not mean the wax can bind it. Beyond about 12 percent the excess oil is not held by the wax, which tends to cause problems rather than a stronger scent.

What happens if I use too much fragrance oil?

Too much oil can lead to sweating, where puddles rise to the top, as well as wick clogging, tunnelling and inconsistent burning. Hot throw can actually weaken, and free floating oil can increase fire risk, so overloading often makes a candle both unattractive and unsafe.

Does more fragrance always mean a stronger scent throw?

No. Beyond a certain point extra oil interferes with the burn rather than boosting the scent. A balanced load, combined with a compatible fragrance, the right wick and proper cure time, delivers a far better result than simply adding more oil.