Which Essential Oils Are Flammable?

Essential oils have been used for centuries for their various therapeutic properties. They are often diffused into the air, applied topically, or added to bathwater to promote relaxation, alleviate stress, and improve overall well-being.

However, while essential oils are generally safe, it’s important to be aware of their potential hazards.

One of the most significant risks associated with essential oils is their flammability. This article will explore this topic in more detail and provide some vital information to remember when using essential oils.

Which Essential Oils Are Flammable

What Are Essential Oils?

Essential oils are natural, volatile liquids that are extracted from plants. They are highly concentrated and possess the characteristic fragrance and properties of the plant from which they are derived.

Depending on the plant material, essential oils are obtained through distillation, cold pressing, or solvent extraction.

These oils comprise diverse chemical compounds, including terpenes, alcohols, esters, aldehydes, and phenols.

The unique combination of these constituents gives each essential oil its distinct aroma and potential therapeutic benefits.

Essential oils have been used for centuries in various traditional systems of medicine, such as Ayurveda and traditional Chinese medicine, for their potential healing properties.

They are also widely used in aromatherapy, which involves inhaling or topicalizing essential oils to promote physical, emotional, and mental well-being.

Factors Affecting Flammability of Essential Oils

Several factors influence the flammability of essential oils. Understanding these factors is crucial for safe handling and storage. The main factors affecting the flammability of essential oils include:

Flash Point: The flash point is the lowest temperature at which a substance gives off vapors that can ignite when exposed to an open flame or heat source. Essential oils with lower flash points are more flammable than those with higher ones.

Volatility: Volatility refers to the tendency of a substance to evaporate at a given temperature. Essential oils with high volatility evaporate quickly and are more likely to ignite when exposed to a flame or heat source.

Chemical Composition: The chemical composition of essential oils plays a significant role in their flammability.

Some essential oils contain chemical constituents that are highly flammable, such as alcohols, aldehydes, or ketones. The presence and concentration of these flammable compounds can affect the overall flammability of the oil.

Oxygen Content: The presence of oxygen can influence the flammability of essential oils. Essential oils can contain oxygenated compounds that can contribute to the ease of ignition and sustain combustion.

Contaminants: Contaminants or impurities in essential oils, such as water or other volatile substances, can affect their flammability. These impurities can lower the flash point and increase the risk of flammability.

It’s important to note that while some essential oils may have flammable properties, their typical use involves dilution and dispersion, significantly reducing the risk of flammability.

However, when handling essential oils in concentrated form or in situations involving heat or open flames, it is essential to exercise caution and follow appropriate safety measures to prevent accidents or fires.

Essential Oils That Are Flammable

Some essential oils are considered flammable due to their higher volatility and potential for ignition. Handling these oils with caution and following appropriate safety guidelines is important. Here are some examples of essential oils that are generally considered more flammable:

Citrus Essential Oils: Essential oils derived from citrus fruits such as lemon, orange, lime, and grapefruit have higher volatility and are more prone to flammability. Examples include lemon oil, orange oil, and bergamot oil.

Eucalyptus Essential Oil: Eucalyptus oil has higher volatility, which can increase its flammability. It is commonly used for its refreshing aroma and respiratory benefits.

Pine Essential Oil: Pine oil, derived from various species of pine trees, is known for its strong scent. It has higher volatility and can be flammable.

Cinnamon Essential Oil: Cinnamon oil, derived from the bark of cinnamon trees, has a solid and spicy aroma. It is considered flammable due to its higher volatility.

Clove Essential Oil: Clove oil, obtained from clove buds, has a distinctive warm and aromatic scent. It is known to be flammable due to its higher volatility.

Thyme Essential Oil: Thyme oil, known for its herbaceous and medicinal scent, is more volatile and can be flammable. It is commonly used for its antimicrobial properties.

Rosemary Essential Oil: Rosemary oil has a distinctive herbal aroma and is known for its stimulating properties. It has higher volatility and can be flammable under certain conditions.

Tea Tree Essential Oil: With its potent and medicinal scent, tea tree oil is widely used for its antibacterial and antifungal properties. It has higher volatility and can be flammable.

Lavender Essential Oil: Lavender oil, renowned for its calming and floral aroma, has moderate volatility but can still be flammable. It is a popular choice in aromatherapy and skincare.

Peppermint Essential Oil: Peppermint oil has a refreshing and minty scent. It has higher volatility and can be flammable. It is commonly used for its cooling and invigorating properties.

Essential Oil Flash Point (°C) Volatility Oxygen Content  Contaminants
Lemon 50 High Low  Minimal
Peppermint 61 High Low  Minimal
Eucalyptus 49 High Low  Minimal
Tea Tree 63 High Low  Minimal
Rosemary 35 High Low  Minimal
Cinnamon 87 High Low  Minimal
Clove 93 High Low  Minimal
Thyme 61 High Low  Minimal
Lemongrass 79 High Low  Minimal
Basil 59 High Low  Minimal

Several essential oils are generally considered non-flammable due to their high flash points and low volatility. Here are some examples of essential oils that are typically less flammable:

Essential Oils That Are Non Flammable

Lavender Essential Oil: Lavender oil is known for its calming and soothing properties. It has a sweet, floral aroma and is commonly used for relaxation, sleep support, and promoting a sense of well-being.

Patchouli Essential Oil: Patchouli oil has a rich, earthy, and musky scent. It is often used in perfumery and skincare products. Patchouli oil is known for its grounding and balancing effects and is often used for meditation and emotional support.

Sandalwood Essential Oil: Sandalwood oil has a warm, woody aroma and is highly valued in traditional practices such as Ayurveda and meditation. It is known for its calming and grounding properties and is often used for spiritual and emotional support.

Cedarwood Essential Oil: Cedarwood oil has a woodsy and comforting scent. It is commonly used in aromatherapy for its relaxing and soothing effects. Cedarwood oil is also known for its insect-repellent properties and is used in natural insect repellents.

Frankincense Essential Oil: Frankincense oil has a warm, resinous aroma with hints of citrus and spice. It is often associated with spiritual and religious ceremonies and is used for meditation and promoting a sense of tranquility and focus.

Roman Chamomile Essential Oil: Roman chamomile oil has a sweet, apple-like aroma. It is renowned for its calming and gentle properties, making it a popular choice for promoting relaxation, soothing skin irritations, and supporting sleep.

Geranium Essential Oil: Geranium oil has a floral, slightly sweet aroma. It is known for its balancing effects and is often used to support emotional well-being and promote harmony. Geranium oil is also used in skin care products for its beneficial properties.

Clary Sage Essential Oil: Clary sage oil has a herbal, slightly sweet scent. It is often used for its calming and mood-enhancing effects. Clary sage oil is also associated with hormonal support and is used in blends for women’s health.

Bergamot Essential Oil: Bergamot oil has a citrusy, floral aroma with subtle hints of spice. It is uplifting and refreshing, commonly used for its mood-enhancing properties. Bergamot oil is also used in skincare and haircare products.

Ylang Ylang Essential Oil: Ylang Ylang oil has a sweet, floral fragrance with exotic undertones. It is known for its calming and aphrodisiac properties. Ylang-ylang oil is often used in perfumes, as well as for promoting relaxation and supporting a positive mood.

These essential oils are generally considered non-flammable but should be handled carefully and stored correctly to ensure their quality and longevity.

Essential Oil Flash Point (°C) Volatility Oxygen Content  Contaminants
Lavender 100 High Low  Minimal
Patchouli 100 High Low  Minimal
Sandalwood 100 High Low  Minimal
Cedarwood 100 High Low  Minimal
Frankincense 100 High Low  Minimal
Roman Chamomile 100 High Low  Minimal
Geranium 100 High Low  Minimal
Clary Sage 100 High Low  Minimal
Bergamot 100 High Low  Minimal
Ylang Ylang 100 High Low  Minimal

Benefits Of Essential Oils

Essential oils offer many potential benefits thanks to their unique chemical compositions and aromatherapeutic properties. Here are some expected benefits associated with the use of essential oils:

Aromatherapy: Essential oils often promote relaxation, relieve stress, uplift mood, and create a soothing ambiance.

Emotional Well-being: Certain essential oils can help support emotional balance, reduce anxiety, improve sleep quality, and enhance overall mental well-being.

Skincare: Many essential oils possess beneficial properties for the skin, such as moisturizing, soothing, and anti-inflammatory effects.

They can be used in skincare routines to address various skin concerns and promote a healthy complexion.

Respiratory Health: Some essential oils, like eucalyptus, peppermint, and tea tree, have expectorant and decongestant properties, which can help relieve congestion, support respiratory health, and ease breathing.

Pain Relief: Certain essential oils, such as lavender, peppermint, and chamomile, have analgesic and anti-inflammatory properties, making them helpful in managing minor aches, pains, and muscle discomfort.

Natural Cleaning: Essential oils with antimicrobial properties, such as lemon, tea tree, and lavender, can be used in natural cleaning products to help disinfect surfaces and provide a fresh scent.

Insect Repellent: Some essential oils, like citronella, lemongrass, and peppermint, are known for their insect-repellent properties. They can be used as natural alternatives to chemical-based repellents.

Digestive Support: Certain essential oils, including ginger, peppermint, and fennel, can aid digestion, alleviate digestive discomfort, and support healthy digestion.

Hair and Scalp Care: Essential oils like rosemary, lavender, and tea tree have been used to promote healthy hair and scalp, stimulate hair growth, and address common scalp issues.

Natural Home Remedies: Essential oils can be incorporated into various home remedies for various concerns, such as headache relief, immune support, soothing insect bites, and more.

It’s important to note that individual experiences with essential oils may vary, and it’s advisable to use them safely, following proper dilution guidelines and consulting reliable sources or professionals for specific usage recommendations.


Essential oils are concentrated plant extracts known for their aromas and potential therapeutic properties. Some essential oils, like citrus and eucalyptus, are generally more flammable due to their volatility.

However, oils like patchouli, sandalwood, and vetiver are generally non-flammable.

Proper storage and usage guidelines should be followed to minimize fire risks.

When using essential oils, it is advisable to consult reliable sources or seek guidance from professionals experienced in essential oil usage to ensure safe and practical application.

By understanding the flammability characteristics of essential oils and practicing responsible usage, individuals can enjoy these natural substances’ aromatic and potential therapeutic benefits while prioritizing safety.