How To Improve Your Hot Throw

Ever made a candle that smells amazing in the jar, but then... you smell nothing when you light it? You're definitely not alone! Hot throw is one of the biggest challenges in candle making, but the good news is there are plenty of ways to improve it.

First, What Is Hot Throw?

There are two types of fragrance throw every candle maker should know. Cold throw is what your candle smells like when it's unlit. This is your customer's first impression of your product when they pick it up in a store and sniff the jar. Hot throw is what your candle smells like when it's actually burning, when the wick is melting the wax and releasing the fragrance into the room. If you're getting compliments on the cold throw but not the hot throw, keep reading.

Ensure Your Fragrance Is Fully Blended Into Your Wax

This is the foundation. Fragrance has top, middle, and bottom notes, and those notes can separate in the jar if you're not careful. To prevent this, blend your fragrance into warmer wax, so it has the energy it needs to fully incorporate. Adding energy can come in different forms: agitation or heat. With soy wax, we want to avoid excessive agitation and instead rely on heat to do the work. You can also let the wax cool to a hazy, slightly crystallized state before pouring. Those crystal structures actually hold onto your fragrance and help suspend the fragrance molecules throughout the jar and distribute it evenly from the top of the jar to the bottom, which pays off when the candle burns.

Optimize Your Wick Selection

Your wick has more influence over hot throw than most people realize. A very aggressive wick will produce a tremendous hot throw. Think of your hot throw like a mushroom — with an aggressive wick, the fragrance shoots up and out of the jar and clouds into the adjacent rooms rather than filling the space the candle is actually in. A smaller wick creates more of a fragrance spill, where scent rolls around the sides of the jar and into the room. The sweet spot is a wick that's small enough to keep fragrance in the room, but large enough to create a full melt pool. Finding that balance takes trial and error, but it's worth the effort.

Mind Your Pour Temperature

Pouring at the right temperature protects your fragrance and your finished candle. Pouring warmer, around 170°F, can help your fragrance bind to the wax and give you better sidewall adhesion and cleaner tops. The key is to give it one final stir just before pouring so the fragrance notes don't separate in the jar.

Utilize pour temperatures to avoid using a heat gun to fix your tops. When you hit the top of a candle with a heat gun, you're not just smoothing the wax; you're also pushing fragrance out, which is why you can smell it so strongly in that moment. Instead, try pouring at a warmer or cooler temperature to limit your heat gun usage. When pouring cooler, the key is to watch for the soy wax to reach that hazy, crystallizing stage. You'll get cleaner tops without needing a heat gun, and you'll preserve more fragrance in the finished candle.

Choose the Right Fragrance for Your Wax

Not all fragrances perform the same way in every wax. If you're making soy candles, make sure your fragrance is formulated to work well with soy. One ingredient worth asking your fragrance supplier about is benzyl benzoate; it doesn't always cause issues, but sometimes it can cause blending problems in soy wax and negatively impact fragrance throw. Fragrance formulas are proprietary, so suppliers don't always disclose what's in them, but if a fragrance is labeled as soy-friendly, it likely contains little to no benzyl benzoate. When in doubt, ask.

Final Thoughts

Improving your hot throw isn't about one magic fix. It's about getting several things right at once: how you blend your fragrance, which wick you choose, how you pour, and what fragrance you start with. Test one variable at a time, take notes, and don't get discouraged. A great hot throw is absolutely achievable with the right process.