The Difference Between Cold Throw and Hot Throw in Candles

Imagine this: You are at a local weekend market. A customer walks up to your stall, picks up one of your beautifully branded jars, takes off the lid, and inhales deeply. They smile, immediately hand over their card, and take the candle home.

That right there? That is the power of a great Cold Throw.

But what happens when they actually light it in their living room? Does the scent fill the space, or does it completely vanish? That is the true test of your Hot Throw.

If you spend enough time in the candle-making community, you will see the acronyms "CT" and "HT" thrown around constantly. At Australian Luxury Candle Supplies, we know that mastering both is the secret to building a loyal customer base that comes back for refills time and time again.

Here is exactly what these terms mean, why they both matter, and how to improve them in your next batch.

What is Cold Throw (CT)?

Cold throw refers to the strength and character of a candle’s fragrance before it is lit. It is how the solid, room-temperature wax smells when you simply take the lid off the jar.

Why it matters: Cold throw is your ultimate sales tool. Whether you are selling at a boutique in Victoria or a bustling craft market, the cold throw is what convinces a new customer to make a purchase. If your candle has no smell when unlit, the customer will simply put it back on the shelf, assuming it won’t smell when burning, either.

What is Hot Throw (HT)?

Hot throw is the strength and reach of the fragrance while the candle is actually burning. Once the wick is lit and the wax melts into a liquid "melt pool," the heat causes the fragrance oil to evaporate and disperse into the air.

Why it matters: While cold throw gets you the first sale, hot throw gets you the repeat sale. If a customer pays premium prices for a luxury candle, they expect the scent to fill their bedroom or living space. If a candle has a brilliant cold throw but a weak hot throw, the customer will feel cheated and likely won't buy from your brand again.

Why Do Some Candles Have Great CT but Terrible HT?

This is one of the most frustrating hurdles for new makers! You pour a batch, it smells incredible sitting on your curing rack, but when you finally light it... nothing.

Here are the four most common culprits for a weak hot throw:

1. You Didn't Let It Cure Patience is the hardest part of candle making. Natural waxes, especially soy wax, require a "curing" period. This allows the fragrance oil and the wax molecules to fully bind together on a microscopic level. If you light a soy candle 24 hours after pouring it, your hot throw will be incredibly weak. Keep the lid on and let it cure for a minimum of 1 to 2 weeks before testing.

2. Your Melt Pool is Too Small (Under-wicking) Your wick is the engine of your candle. The fragrance is released from the melted wax, not the flame itself. If your wick is too small for your jar, it will only melt a tiny pool of wax in the centre (this is called tunnelling). A small melt pool means very little fragrance is evaporating into the air. Sizing up your wick will increase the melt pool and immediately boost your hot throw.

3. Adding Fragrance at the Wrong Temperature If you add your fragrance oil when the wax is too cool, it won't bind properly. It might sit on the surface (giving you a great cold throw) but fail to disperse evenly throughout the candle (resulting in a terrible hot throw). Always aim to add your fragrance oil at around 85°C and stir gently for a full two minutes.

4. Low-Quality Fragrance Oils Not all oils are created equal. Some cheaper oils are heavily diluted with solvents. While they might smell strong straight out of the bottle, they burn off instantly when introduced to heat. Investing in premium, highly concentrated fragrance oils is non-negotiable for a luxury hot throw.

How to Test Your Throws Like a Pro

Don't just light a candle on your kitchen bench and hope for the best! Professional makers do controlled burn tests.

Place your cured candle in a standard-sized room with the door closed. Light it and step out. Wait an hour, then walk back into the room. Are you hit with a wall of beautiful fragrance, or do you have to lean directly over the flame to smell anything? Keep a "Testing Log" to track which wick sizes and fragrance loads give you the best results.

Ready to Maximize Your Scent?

Creating a candle with both an intoxicating cold throw and a room-filling hot throw takes practice, but starting with the right materials puts you miles ahead of the competition.

At Australian Luxury Candle Supplies, our waxes and concentrated fragrance oils are specifically chosen for their exceptional throw capabilities. Explore our collection today and start pouring candles your customers won't be able to put down.