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Garlic Essential Oil
The Bold Bulb of Ancient Kitchens
Garlic essential oil is an intensely pungent, sulfurous and spicy oil steam-distilled from crushed bulbs, best suited to experienced users who want a tiny hint of its character in a well-ventilated diffuser blend.
Botanical name: Allium sativum
Aroma: Pungent, sulfurous, warm and intensely spicy
Note: Base
Main growing region: Central Asia, where the plant is thought to have originated
Typically extracted: Steam-distilled from crushed bulbs
Blends well with: Lemon, Rosemary, Eucalyptus, Black Pepper and Cedarwood
Top 3 benefits:
- Bold character: one of the most powerful aromas in the range, distinctive and unmistakably garlic.
- A little goes a long way: a single drop is enough to give a diffuser blend a savoury, spicy edge.
- Culinary heritage: a scent tied to one of the oldest cultivated plants and to kitchens around the world.
Safety first: garlic oil is highly potent and a known skin irritant, so we advise diffusion only, never on the skin, and keep it well away from pets, especially cats, and from anyone taking blood-thinning medication. Read the full safety information.
What Is Garlic Essential Oil?
Garlic essential oil is steam-distilled from the crushed bulbs of Allium sativum, the same plant used in kitchens around the world. The oil is far more concentrated than the fresh cloves, and its scent is sharp, sulfurous and warm with a long-lasting savoury edge. Many people find it overpowering on its own, which is why it is almost always used in tiny amounts alongside other oils.
Its aroma comes from organosulfur compounds such as diallyl disulfide and diallyl trisulfide. These are the same family of molecules that give fresh garlic its smell, and they are also the reason the oil can irritate skin and linger on hands and clothing. For that reason we recommend this oil for diffusion only, in very small amounts.
Benefits and Traditional Uses
The science: garlic oil has shown antimicrobial activity in laboratory studies, but that does not mean it cleans or purifies the air in a home. Its main practical role is as a strong, savoury aroma, so treat it as a fragrance note rather than a cleaning product.
How to use (the savoury diffuser): add 1 drop of garlic to 4 drops of Lemon in a diffuser in a large, well-ventilated room, for 20 to 30 minutes at a time, away from pets.
The science: the scent of garlic is closely tied to cooking and to warmth. In small doses and in the right blend it can add a surprising savoury depth, though it is a love-it-or-hate-it aroma.
How to use (the scent test): put 1 drop on a cotton ball in a lidded jar, then open it briefly at arm’s length to see if you like the scent. Keep the jar away from your face, skin and pets.
The science: garlic is a very strong aroma, so it is easily dominated by other oils or can dominate them. Pairing it with bright citrus or herbal oils softens its edge.
How to use (the herbal blend): combine 1 drop of garlic with 3 drops of Rosemary and 3 drops of Eucalyptus in a diffuser, in a ventilated room only.
How to Use Garlic Essential Oil
| Method | Instructions | VivaForte tip |
|---|---|---|
| Diffusion | 1 drop only, combined with 3 to 5 drops of lemon or another oil, for 20 to 30 minutes. | Use in a large, well-ventilated room and clean your diffuser afterwards, as the scent lingers. |
| Inhalation | 1 drop on a cotton ball in a lidded jar, opened briefly at arm’s length. | Keep it off skin and away from the face, children and pets. |
| Topical | Not advised. Garlic oil is a known skin irritant and we do not recommend applying it to the skin, even diluted. | If you do get oil on your skin, wash it off with plenty of soapy water and stop using it. |
| Blending | 1 drop in a diffuser blend with citrus, rosemary or eucalyptus. | Always add the garlic last and in very small amounts. |
Garlic Safety Information
- Skin irritant. Not for skin use. Garlic oil is highly potent and can cause irritation, redness and an allergic skin reaction, so we do not recommend using it on the skin, even when diluted. Wash off any contact with plenty of soapy water.
- External and aromatic use only. Do not swallow essential oils. Garlic oil is not a food ingredient or a supplement.
- Medication and health conditions. Garlic is traditionally associated with effects on blood clotting. If you take blood-thinning medication, have a bleeding disorder or are due to have surgery, speak to a healthcare professional before use, and do the same if you are pregnant, breastfeeding or have a medical condition.
- Children. Keep out of reach of children, and do not diffuse it near babies or young children.
- Pets. Garlic and other alliums are harmful to cats and dogs, and the oil is very concentrated. Keep it well away from pets, never diffuse it where animals cannot leave the room, and never apply it to them.
- Chemical profile. High in organosulfur compounds, including diallyl disulfide and diallyl trisulfide.
For general guidance on dilution, patch testing and sun safety, read our Essential Oil Safety guide.
History and Heritage
Garlic is among the oldest cultivated plants. It is thought to have originated in Central Asia and has been grown for thousands of years, spreading across the Mediterranean, the Middle East, India and China. Cloves were found among the goods in the tomb of the pharaoh Tutankhamun, and the bulb appears in the culinary and folk traditions of many ancient cultures.
The essential oil is a much more recent product, made by distilling the crushed bulbs. It is highly concentrated, and today it is mainly used in the flavour industry and as a very occasional curiosity in aromatherapy, rather than as an everyday home oil.
Garlic Essential Oil FAQs
Is garlic essential oil safe to use on the skin?
We do not advise it. Garlic oil is a known skin irritant and can cause burns or allergic reactions, even when diluted. We recommend diffusion only, in tiny amounts, and washing off any skin contact with plenty of soapy water.
Is garlic oil safe around pets?
No, take great care. Garlic and other alliums are harmful to cats and dogs. Keep the oil well away from pets, do not diffuse it where animals cannot leave, and never apply it to their skin or fur.
Can I take garlic essential oil as a supplement?
No. Essential oils are not for swallowing, and garlic oil is extremely concentrated. Garlic supplements sold for eating are completely different products. Speak to a healthcare professional about any supplement.
What does garlic essential oil smell like and what blends with it?
It smells pungent, sulfurous and warm, much stronger than fresh garlic. It blends best in tiny amounts with Lemon, Rosemary, Eucalyptus and Cedarwood.
How do I get the garlic smell out of my diffuser?
Use only 1 drop at a time and clean the diffuser straight away. Rinse it with warm water and a little mild soap, then wipe it with a cloth. Citrus oils like lemon can help freshen the scent afterwards.
Continue Exploring
- Lemon: a bright citrus partner that softens garlic’s savoury edge in a diffuser.
- Rosemary: a fresh herbal oil that sits well alongside garlic’s culinary character.
- Black Pepper: another warm kitchen spice with a milder, drier aroma.
- Essential Oil Safety: dilution, patch testing and sun safety explained.
- All Single Essential Oils: browse the full VivaForte botanical range.