Making candles with pure essential oils is one of the most rewarding things you can do as a maker. The scent is natural, complex and genuinely therapeutic — nothing like synthetic fragrance oils. But choosing the right essential oils for candle making isn't as simple as picking your favourite smell. There are some important technical considerations that will make the difference between a candle that smells incredible and one that barely throws any scent at all.
In this guide we'll walk you through everything you need to know to choose, use and get the very best results from essential oils in your candles and wax melts.
Why use essential oils in candles?
Pure essential oils bring something that synthetic fragrance oils simply can't replicate: genuine botanical complexity. Each oil is made up of dozens of natural aromatic compounds that interact with each other and with the wax in unique ways. The result is a scent that evolves as the candle burns — deeper, more nuanced and more alive than any single-note synthetic alternative.
There's also the wellbeing angle. Essential oils like lavender, bergamot and vetiver have real, documented aromatherapeutic properties. A candle made with our Wellbeing Sleep blend isn't just a nice smell — it's genuinely helping to calm your nervous system and prepare you for rest.
Flash point: the most important thing most beginners don't know
Every essential oil has a flash point — the temperature at which it can ignite. In candle making, this matters for two reasons: safety and scent throw.
Citrus oils like lemon and grapefruit have very low flash points (sometimes as low as 43°C), which means they can literally burn off before your wax has even set. This is why making a pure lemon candle that actually smells of lemon is so difficult. Oils with higher flash points — like cedarwood, patchouli, sandalwood and vetiver — perform much more reliably in wax because they survive the heat of the pour and continue to release scent throughout the burn.
This is one reason why blended essential oils often outperform single oils in candles. A well-designed blend like our Forest or Amber Woods combines high-flash-point base note oils with lighter top notes, giving you both an initial burst of scent and a long-lasting warm throw.
How much essential oil to use in candles
As a general starting point:
- Soy wax candles: 6–10% fragrance load by weight
- Coconut or rapeseed wax: 6–8%
- Wax melts: Up to 10%
Always check the IFRA certificate for the specific oil or blend you're using — some essential oils have maximum permitted usage levels for candles that are lower than these general guidelines. All our oils come with full IFRA certificates, SDS sheets and CLP labels available to download.
CLP compliance: what you need to know
If you're selling candles in the UK, CLP (Classification, Labelling and Packaging) compliance is a legal requirement — not optional. Every candle you sell must carry a CLP label that includes hazard symbols, signal words, allergen warnings and safe use instructions, calculated at the specific percentage of fragrance used in your product.
All of our essential oil blends come with CLP documentation for the most common usage rates (typically 5%, 8% and 10% for candles). Our CLP service can also create bespoke CLP documentation for your specific formulation if needed.
The best essential oil blends for candle making
Based on customer feedback and our own testing, these are some of our most reliable candle making blends:
- Wellbeing Sleep — lavender, bergamot and vetiver. Consistent bestseller with excellent hot throw in soy wax.
- Forest — sweet orange, ylang ylang, cedarwood and sandalwood. One of our top-performing candle oils year-round.
- Amber Woods — patchouli, sandalwood, cedarwood and benzoin. Clean CLP at 8% with no warning signs — ideal for retail candle makers.
- Gingerbread House — clove, ginger and warm spices. Our top Christmas candle oil — book early as it sells out fast.
- Earthy Tones — grapefruit, cedarwood and cinnamon. Excellent throw and a beautifully complex, autumn-inspired scent.
Tips for the best scent throw
- Add your essential oils at 60–65°C for soy wax — too hot and top notes flash off; too cool and the oil won't bind properly.
- Stir for a full two minutes to ensure even distribution throughout the wax pool.
- Allow candles to cure for at least 48 hours before testing — scent throw improves significantly as the wax crystallises.
- Test your wick size carefully — too small creates a weak melt pool and poor scent throw; too large burns too fast and may scorch.
Shop essential oils for candle making
We supply pure essential oil blends specifically tested for candle and wax melt making, with full CLP and IFRA documentation included. All our oils are made in the UK, available from 10ml to 500ml, and priced for makers at every scale.