Garlic for acne: no trial, and a risk of burns

No trial has tested garlic on acne, so no source shows that it helps. The clearest statement about garlic on skin is a warning. The US National Center for Complementary and Integrative Health (NCCIH) says: "fresh raw garlic may not be safe when used topically. It can cause severe skin irritation and chemical burns." Topical means put on the skin. This page is part of Skinli's guide to home remedies for acne.

Skinli gives general education and is not a doctor. For the reports below, Skinli read the published summaries (abstracts), and for one report it could read only the title. No source read for this guide gives a way to use garlic on acne, so this page gives none.

No study has tested garlic on acne

The searches run for this guide found no study of garlic on acne in people. That covers raw garlic, garlic juice, garlic oil and any product made from garlic.

The NCCIH is part of the US National Institutes of Health. Its garlic page, last updated in February 2025, does not contain the word "acne". It reviews garlic for cholesterol, blood pressure and other conditions. It says "Garlic may also be used topically (applied to the skin)", and it reports no benefit of garlic for any skin condition.

The NICE acne guideline for England does not mention garlic.

The sources describe one thing about garlic and skin in detail, the risk of harm, and the rest of this page covers it.

What the NCCIH says about garlic on skin

The NCCIH's safety section separates garlic that is eaten from garlic on the skin. About the skin it says three things:

• "Some forms of garlic used topically also seem to be safe." The page does not say which forms.
• "However, fresh raw garlic may not be safe when used topically. It can cause severe skin irritation and chemical burns." A chemical burn is skin damage caused by a substance.
• "Some people have allergic reactions to garlic."

For pregnancy the page says: "Little is known about the safety of using garlic topically during pregnancy or while breastfeeding."

The published burn cases

Doctors have published cases of burns from garlic used as a home remedy, including on the face.

Report	Who	What was done	What happened
Journal of Special Operations Medicine, 2016	A man aged 20	He read about a treatment online, made a garlic paste, put it on a minor skin problem on his cheek and covered it with a dressing	"Twelve hours later, he noted an intense burning sensation where he had applied the garlic paste." He had second-degree burns with blistering, and recovered with no further treatment
Australasian Journal of Dermatology, 2018	A patient of plastic surgeons in Kuala Lumpur	A garlic face mask used for acne	A burn on the face. Only the title could be read: "A case of facial burn due to the misuse of garlic face mask for acne."
Pediatric Dermatology, 2000	An infant aged 3 months	Garlic was put on the skin	"blistering lesions and a second-degree burn"
Handchirurgie, Mikrochirurgie, Plastische Chirurgie, 2026	A review of 18 case reports published since 2000	In most cases garlic stayed on the skin for a long time or under a cover	Burns from the surface down to the deep layer of the skin. "Healing times ranged from 7 to>56 days"

The 2016 report says how often this has been recorded: "Topical burns from the use of garlic have been reported rarely in the medical literature." It adds that most cases came from home remedies.

The 2026 review is the fullest account. Its authors kept 18 case reports that gave the treatment and the result.

Time and covering. "Most reported cases involved superficial to deep dermal burns caused by prolonged or occlusive garlic application." Superficial means near the surface. Dermal refers to the dermis, the deeper layer of the skin. Occlusive means covered, for example by a dressing or a bandage. The review adds: "Prolonged occlusion increases risk for deep dermal necrosis." Necrosis is the death of tissue.

Treatment. Burns near the surface healed with dressings and creams. For the others, the review says "deeper injuries often required surgical intervention including debridement, and in selected cases, split-thickness skin grafting." Debridement is the removal of dead tissue. A skin graft covers the wound with a thin layer of skin taken from another part of the body.

How common. The authors call these burns "an uncommon but clinically relevant chemical injury."

Home advice to leave garlic on a pimple overnight, or to tape it in place, describes long contact under a cover. That is the pattern the review links with the deeper burns.

Garlic can inflame skin without an allergy

Garlic can also cause a rash without a burn.

A 1991 study in the journal Contact Dermatitis described people in Hong Kong who used garlic on their skin as a remedy: "8 patients developed contact dermatitis after rubbing the cut end of a fresh garlic bulb onto the skin to treat fungal and other infections". Contact dermatitis is a rash from something that touched the skin. The rashes were "at the groin, neck, lower limb, hand or face."

The researchers then put fresh garlic juice on the skin of people who did not have the rash. All 5 of these comparison people reacted as well. The allergy tests were negative. Their conclusion: "The results confirmed that the contact dermatitis was due to irritation." In plain words, fresh garlic juice can inflame the skin of a person with no garlic allergy.

Their advice was that "the practice of direct application of fresh garlic onto the skin for treating infections should be discouraged."

True allergy to garlic also exists. A 1996 paper describes it on the hands of people who handle garlic, and says a dermatologist can test for it on a patch of skin. The American Academy of Dermatology (AAD) includes garlic in a short list of garden plants: "The following homegrown crops have been known to cause skin reactions:" strawberry, garlic, tomato, comfrey and borage.

Irritation can add to acne and dark marks

Irritated skin is a problem for anyone with acne. The AAD says: "Anytime you irritate your skin, you risk getting more acne."

Inflammation can also leave a mark after it settles. An AAD news release from 2023 says that "whenever there is inflammation in the skin, such as an acne bump, there is a risk for darkening of the skin (known as post-inflammatory hyperpigmentation)."

The AAD makes a related point about face masks: "Using masks with the wrong ingredients for you can lead to irritation, dryness, or even breakouts because they can damage your skin barrier". The skin barrier is the outer layer of the skin.

A food that is safe to eat can still harm skin. The FDA gives a kitchen example: "cumin oil is safe in food, but can cause the skin to blister." The page on lemon juice for acne covers another kitchen item with a known skin risk.

Garlic and acne bacteria

No study read for this guide tested garlic against acne bacteria on a person's skin. Bacteria are also one cause of acne among several. The AAD says: "Bacteria, clogged pores, oil, and inflammation can all cause acne." An AAD news release from 2025 adds: "Not all acne, however, is caused by bacteria."

For the part that bacteria play, the AAD names a tested ingredient: "Benzoyl peroxide: This active ingredient reduces acne-causing bacteria on your skin." See the guide to benzoyl peroxide.

Eating garlic and garlic pills

No study read for this guide looked at garlic in food, or garlic pills, and acne.

NICE writes the acne guideline for the health service in England. It says: "Advise people that there is not enough evidence to support specific diets for treating acne." The guide does diet cause acne covers the foods that have been studied.

Garlic pills carry a warning of their own. The NCCIH says: "Taking garlic supplements may increase the risk of bleeding." It says this is especially important before surgery and for people who take medicines that affect bleeding, such as aspirin or blood-thinning drugs (anticoagulants). Supplements also go on sale without a drug review. In the NCCIH's words, "dietary supplements are not approved by the U.S. Food and Drug Administration (FDA) before they are sold to the public."

Questions that no source answers

• Which forms of garlic are safe on skin. The NCCIH says some forms "seem to be safe" and does not name them.
• How long is too long. One case involved 12 hours under a dressing. No source gives a safe time for raw garlic on the face.
• Garlic oil, or garlic mixed with honey. No study of either on acne was found. The page on honey for acne reports the one honey trial.

What the AAD, the NHS and the FDA rule support

These three sources name a short list of drug ingredients for acne.

Source	What it names for acne
AAD, for a deep, painful pimple	"Choose a product that contains one of these acne-fighting active ingredients: adapalene, azelaic acid, benzoyl peroxide, or salicylic acid."
NHS acne page	"try acne treatments you put on your skin such as salicylic acid or benzoyl peroxide"
FDA rule for acne drugs sold without a prescription	Benzoyl peroxide at 2.5 to 10 percent, salicylic acid at 0.5 to 2 percent, sulfur at 3 to 10 percent, and sulfur combined with resorcinol

Garlic appears on none of these lists. Adapalene is a retinoid, a medicine related to vitamin A, and the AAD says acne treatment that contains it is sold online and in stores. The AAD's acne pages name a maker of prescription acne drugs as their supporter.

The NCCIH reports that the AAD's acne guideline found the data on herbal and other complementary therapies too limited to recommend them.

For one sore pimple, the guide on ice on a pimple covers the cold and warm compresses that the AAD describes.

If garlic has hurt your skin, and when to see a doctor

Wash garlic off as soon as the skin burns, stings or itches. The AAD's advice after a skin reaction to a product is to "gently wash the product off as soon as possible, and don't use it again."

See a doctor for blistering, for a burn on the face, or for pain that goes on after the garlic is washed off. The 2026 review found that the deeper garlic burns often needed surgery, so a burn that blisters deserves a medical check.

For the acne itself, the NHS says to see a GP, which is a family doctor, if "you've tried treating it yourself but it's not getting better", or if "you have lots of spots, or the spots are deep, painful or causing scars". The AAD says to see a dermatologist when acne causes cysts and nodules, which are deep blemishes that can leave scars, or when acne has not cleared with treatment you can buy without a prescription.