Garlic oil for skin is made by infusing crushed garlic cloves into a carrier oil, allowing the sulfur compounds to transfer into a form that’s gentler and easier to apply than raw garlic. The process is simple, but getting it right matters: garlic can cause chemical burns when used incorrectly, and improperly stored garlic oil carries a real botulism risk. Here’s how to make it safely and use it effectively.
Why Garlic Oil Works on Skin
When you crush or chop a garlic clove, an enzyme converts a dormant compound called alliin into allicin, the molecule responsible for garlic’s sharp smell and most of its biological activity. Allicin and its breakdown products (sulfur-containing compounds like diallyl disulfide and diallyl sulfide) are what give garlic oil its skin benefits.
These sulfur compounds are antimicrobial across a broad range. They fight bacteria, inhibit fungal growth, and have antiviral properties. Lab studies show they significantly block the enzymes that Candida albicans (the fungus behind yeast infections and some skin rashes) needs to spread. Garlic compounds also act as antioxidants, helping protect skin cells from oxidative damage. The combination of antimicrobial and anti-inflammatory activity is what makes garlic oil popular for acne-prone skin, minor fungal issues, and general skin irritation.
Choosing the Right Carrier Oil
The carrier oil you use determines how well the finished product works for your skin type. Three common options:
- Sweet almond oil: Rated 0 on the comedogenic scale, meaning it will not clog pores. Suitable for all skin types, including acne-prone skin. It also has a long shelf life, which helps with storage.
- Jojoba oil: Rated 2 (moderately unlikely to clog pores). A good choice for dry or acne-prone skin because its structure is close to the oil your skin naturally produces, so it helps regulate sebum rather than adding excess.
- Coconut oil: Rated 4 (fairly likely to clog pores). Best reserved for body use only. If you’re making garlic oil specifically for your face, skip coconut oil.
For a versatile garlic oil you can use on your face and body, sweet almond oil is the safest bet. Jojoba is a close second, especially if your skin tends to be oily.
Cold Infusion Method
This is the simplest approach and preserves the most active compounds, since heat can break down allicin.
Peel and finely mince 3 to 4 fresh garlic cloves. Let them sit for 10 to 15 minutes after chopping. This resting period is important because it gives the enzyme alliinase time to fully convert alliin into allicin. If you skip this step and immediately submerge the garlic in oil, you’ll get a weaker infusion.
Place the minced garlic into a clean glass jar and pour in about half a cup (120 ml) of your chosen carrier oil, enough to fully submerge the garlic. Seal the jar and store it in the refrigerator. Let it infuse for 24 to 72 hours, shaking gently once a day. The longer it sits, the stronger the infusion. After infusing, strain the oil through a fine mesh strainer or cheesecloth into a clean, dry glass container. Discard the garlic solids.
Gentle Heat Method
If you want your garlic oil ready the same day, a low-heat infusion works. Peel and mince 3 to 4 cloves and let them rest for 10 to 15 minutes. Combine the garlic with half a cup of carrier oil in a small saucepan over the lowest heat setting your stove allows. Warm the mixture for 20 to 30 minutes, stirring occasionally. The oil should never simmer or bubble. If it does, it’s too hot and you’re destroying the active compounds.
Remove from heat, let it cool completely, then strain into a glass container. This method produces a milder infusion than the cold method but is still effective for general skin use.
Storage and the Botulism Risk
This is the part most DIY guides gloss over, and it’s the most important. Garlic is a low-acid vegetable, and when it sits in oil at room temperature, it creates the exact oxygen-free environment that Clostridium botulinum (the bacterium that produces botulism toxin) thrives in. Research from the University of Georgia confirmed that garlic-in-oil mixtures stored at room temperature are at risk for botulism development.
The USDA’s guidelines are straightforward: store homemade garlic oil in the refrigerator at 40°F (4°C) or below, and use it within 7 days. If you want to keep it longer, freeze it. Pour the strained oil into glass freezer jars or plastic freezer containers, leaving half an inch of headspace for expansion. Label it with the date. Frozen garlic oil keeps for several months.
Never store homemade garlic oil at room temperature, even briefly. Commercial garlic oils are treated with acids or preservatives that prevent bacterial growth. Your homemade version has none of those safeguards.
How to Apply It Safely
Raw garlic is potent enough to cause chemical burns on skin. Allicin can damage the outer layer of skin cells, leading to what looks and feels like a burn: redness, blistering, oozing, and significant pain. Published case reports describe patients developing large blisters, white hardened plaques, and severe pain after applying raw garlic directly to their skin. In one case, a patient could barely walk after garlic contact with a foot wart.
An oil infusion is far more diluted than raw garlic, but you should still take precautions. Always do a patch test before applying garlic oil to a larger area. Apply a small, dime-sized amount to the inside of your forearm. Leave it on for 24 hours. If you notice redness, itching, swelling, or any burning sensation, wash it off immediately and don’t use the oil. If no irritation appears after 24 hours, repeat the test daily for 7 to 10 days to rule out a delayed reaction, which dermatologists recommend for any new topical product.
When you’re ready to use it, apply a thin layer to clean skin. For spot treatment on blemishes or small areas of concern, use just a drop or two. For broader application (like on the arms or legs for fungal-prone skin), you can use more. Leave it on for 15 to 20 minutes, then rinse with lukewarm water. If your skin tolerates it well over several days, you can gradually increase the time or leave it on overnight on less sensitive areas like the body (not the face).
Avoid applying garlic oil to broken skin, open wounds, or mucous membranes. Keep it away from your eyes. And if you’re using it on your face, start with very short contact times of 5 to 10 minutes and see how your skin reacts before extending.
What Garlic Oil Can Help With
The strongest evidence for topical garlic is its antifungal activity. The sulfur compounds disrupt the enzymes and growth patterns of common skin fungi, making garlic oil a reasonable complementary approach for mild fungal issues like athlete’s foot or surface-level yeast overgrowth. It’s not a replacement for antifungal medication in persistent cases, but some people find it helpful for mild or early symptoms.
For acne, garlic oil’s antibacterial properties can help reduce the bacteria involved in breakouts, while its anti-inflammatory compounds may calm redness. The key is using a non-comedogenic carrier oil (sweet almond or jojoba) so the oil itself doesn’t trigger new breakouts. Garlic oil also contains flavonoids and selenium, both of which function as antioxidants that help protect skin from environmental damage.
Garlic oil is not a proven treatment for scars, deep cystic acne, or serious skin infections. For mild surface-level concerns and general skin maintenance, it’s a reasonable addition to a routine, provided your skin tolerates it and you store it properly.