Candles burning under a starry night and a coloured smoky milky way

The Most Common Questions About Scented Candles

Scented candles are more than just home décor—they’re an experience. Whether you’re new to using scented candles or a long-time fragrance lover, it’s normal to have questions about how they work, what makes them special, and how to get the most from every candle you burn. Below, you’ll find clear, detailed answers to the most common questions people ask about scented candles, so you can make confident choices and enjoy every moment.

What are scented candles made from?

Scented candles are typically made from a blend of wax, fragrance oils, and a wick. The wax can be soy, paraffin, coconut, beeswax, or a combination of these. Soy wax is especially popular because it’s natural, renewable, and burns cleanly. High-quality scented candles use premium fragrance oils that are specifically designed for candle making, so they throw scent effectively and safely when burned. The wick is usually made from cotton or wood and is selected to suit the size and composition of the candle for a stable, even burn. Some scented candles also include botanical ingredients or decorative elements, but the most important factors are always the wax quality and the purity of the fragrance oil.

How long do scented candles last?

The burn time of scented candles depends on the size of the candle, the type of wax, the wick size, and how well the candle is cared for. A typical 200g soy wax scented candle will burn for about 35 to 40 hours, while larger candles can last 60 hours or more. Pillar candles, votives, and container candles each have different burn times based on their dimensions and wax blend. Proper candle care—like keeping the wick trimmed and allowing the candle to melt all the way to the edge on the first burn—can extend the life of your scented candle. Always follow the burn time recommendations on the label for safety and best results.

Are scented candles safe to burn indoors?

High-quality scented candles made with natural waxes and phthalate-free fragrance oils are safe to burn indoors, provided you follow common-sense safety practices. Always keep burning candles away from flammable objects, children, and pets, and never leave a candle unattended. Choose candles with lead-free cotton wicks and ensure the room is well-ventilated. Avoid burning candles in drafts, as this can cause uneven burning and soot. If you’re sensitive to fragrance, opt for scented candles with essential oil blends or those labeled as hypoallergenic. Reputable brands will clearly state their ingredients and safety practices on the packaging.
For further practical advice on safe candle use at home, see the Fire and Rescue NSW candle safety guidelines.

How can I make my scented candles last longer?

To get the most out of your scented candles, start by letting the candle burn long enough to melt the wax evenly across the surface during the first burn—this prevents tunnelling. Trim the wick to about 5mm before each use, as this promotes a clean, even flame and helps reduce soot. Don’t burn scented candles for longer than the recommended time (usually 3–4 hours at a stretch), as this preserves the fragrance and prevents overheating the jar. Keep your candle away from drafts, which can cause it to burn unevenly. Store your scented candles in a cool, dry place with the lid on to prevent dust and preserve the scent.

Why should I trim the wick on scented candles?

Trimming the wick of scented candles before each burn is crucial for a safe and clean burn. A long or mushroomed wick can create a large, flickering flame, cause soot to form on the jar, and burn through wax too quickly. Keeping the wick at about 5mm helps the candle burn steadily, prevents excessive smoking, and ensures the fragrance is released evenly. Wick trimmers are inexpensive and make this job easy, but regular scissors will also work in a pinch. Always remove any trimmed wick debris from the wax before lighting the candle.

Why does my scented candle tunnel, and how can I fix it?

Tunnelling happens when only the wax around the wick melts, leaving a rim of unmelted wax around the edge of the jar. This is usually caused by extinguishing the candle before the melt pool reaches the edge during the first burn. To avoid tunnelling, always burn your scented candle long enough for the top layer of wax to melt completely from edge to edge. If tunnelling has already started, you can try wrapping the candle in foil with an opening at the top and burning it for an hour—this helps the heat spread to the outer wax. In severe cases, carefully scoop out some wax around the wick to even it out, but prevention is always best.

Are scented candles eco-friendly and cruelty-free?

Many modern scented candles are made with eco-friendly, sustainable ingredients. Soy wax is plant-based and renewable, while coconut and beeswax are also considered eco-friendly. The best scented candles are free from paraffin, phthalates, and animal-derived ingredients. Look for candles labelled as vegan and cruelty-free, and choose brands that use recycled or recyclable packaging. Ethical manufacturers will clearly display these credentials on their labels or websites. Choosing scented candles from a local, small-batch business can also reduce your environmental footprint.

Why doesn’t my scented candle smell strong when burning?

Several factors can affect the scent throw of scented candles, including the size of the room, the composition of the wax, and the quality of the fragrance oil. Some fragrances are naturally lighter, while others are bold and fill a room quickly. For best scent throw, let your scented candle burn long enough for a full melt pool to form—this releases the maximum fragrance. Drafts, incorrect wick size, or old candles that have lost their scent over time can also weaken the aroma. If you want a stronger scent, choose larger candles, high-fragrance-load candles, or opt for candles labelled as “strong scent throw.”

Are scented candles safe for pets?

Most scented candles made with natural waxes and phthalate-free fragrance oils are safe to use in homes with pets, as long as basic precautions are followed. Keep burning candles out of reach of curious animals, and make sure the room is ventilated. Avoid scented candles with essential oils that are known to be harmful to certain pets—such as tea tree, eucalyptus, and citrus oils for cats and dogs. If you notice any signs of irritation in your pets, discontinue use immediately and consult your vet. Always check labels for pet safety information, and when in doubt, choose unscented or lightly scented candles.

What’s the best way to choose scented candles for my home?

Choosing the right scented candles comes down to personal preference and the mood you want to create. For living rooms, try warm and inviting scents like vanilla, sandalwood, or amber. For bedrooms, calming fragrances such as lavender, jasmine, or chamomile can promote relaxation. Fresh and citrusy scents like lemon or blood orange are ideal for kitchens, while florals or green scents work well in bathrooms. Consider the season—spicy, gourmand scents are cosy in winter, while light, fruity, or floral candles are uplifting in summer. Always read the fragrance description before purchasing, and try sampler or mini candles if you’re unsure which scent you’ll love most.

Scented candles are a simple luxury that transform your environment and mood. With the right knowledge and care, you can enjoy beautifully scented spaces and get the most out of every candle you light.

Other resources to read 

Are Scented Candles Bad for You?

Ultimate Candle Care Guide

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