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Tea Tree Oil

Potent antimicrobial essential oil with proven anti-acne and antiseptic properties, clinically validated for skin infections and acne treatment

Scientific nameMelaleuca alternifolia FormulaC10H16 (terpinen-4-ol) Molecular weight136.23 g/mol CAS68647-73-4
90 absorption score
7 safety / 10
15 USD per month
5 documented interactions

Check it against something

Evidence level C

Tea Tree Oil with:

Compatibility score 75 out of 100
75 out of 100
Works better together Compatible. Timing differs, so follow each supplement's own window.

Check it against your whole stack →

What it does

mechanism and evidence for each claim

Clinically proven acne treatment

Evidence-based acne treatment comparable to benzoyl peroxide

Antimicrobial action against P. acnes bacteria and anti-inflammatory effects Evidence A-grade 2-12 weeks

Antimicrobial skin protection

Broad-spectrum antimicrobial support against bacteria, fungi, and viruses

Terpinen-4-ol and other compounds provide potent antimicrobial effects Evidence A-grade Minutes to hours

Antiseptic wound care

Effective antiseptic for cuts, scrapes, and minor wounds

Antimicrobial properties prevent infection and support clean healing Evidence B-grade Immediate to 7 days

Fungal infection treatment

Natural antifungal support for athlete's foot, nail fungus, and skin fungi

Antifungal compounds effectively combat various skin fungal infections Evidence B-grade 2-8 weeks

Anti-inflammatory skin support

Reduces skin inflammation and supports healing

Anti-inflammatory compounds reduce skin irritation and promote healing Evidence B-grade 1-7 days

Others take these for the same thing

Same goal, different mechanism — check any of them against this one

Every pair we checked

12 combinations scored by the engine
Tea Tree Oil + Caffeine No documented interaction either way No known interaction 70
Tea Tree Oil + Creatine Monohydrate No documented interaction either way No known interaction 70
Tea Tree Oil + Vitamin D3 No documented interaction either way No known interaction 70
Tea Tree Oil + Calcium Carbonate No documented interaction either way No known interaction 70
Tea Tree Oil + Whey Protein No documented interaction either way No known interaction 70
Tea Tree Oil + Lactase No documented interaction either way No known interaction 70
Tea Tree Oil + Bovine Collagen No documented interaction either way No known interaction 70
Tea Tree Oil + DHA No documented interaction either way No known interaction 70
Tea Tree Oil + Turmeric No documented interaction either way No known interaction 70
Tea Tree Oil + Fish Oil (EPA/DHA) No documented interaction either way No known interaction 70
Tea Tree Oil + Aloe Vera Enhanced skin healing and reduced irritation Works better together 75
Tea Tree Oil + Vitamin B3 (Niacinamide) Synergistic acne treatment and anti-inflammatory support Works better together 75

Dosage

Twice daily topical
Daily5-15% topical dilution
Acne treatment5-10% dilution applied twice daily
Skin infections5-15% dilution applied 2-3 times daily
Wound antiseptic5-10% dilution applied as needed
Fungal infections10-25% dilution applied twice daily

Before you take it

VeganYes

When to expect it

First EffectsMinutes to hours for antimicrobial effects, 2-4 weeks for acne improvement
Peak Benefits6-12 weeks for sustained acne treatment and skin health
Deficiency DevelopmentNot applicable - herbal supplement
Toxicity OnsetPossible with undiluted use or oral ingestion

How to measure it

Not applicable
MarkerGenerally not needed - topical use only
OptimalImproved skin health and reduced infections
Deficient belowNot applicable for topical herbal supplement
FrequencyMonitor through skin health improvement

What people actually reported to the FDA

CAERS, 1 reports naming it as the suspect

Most reported effects

Asthenia 1
Adverse event 1
Botulism 1
Clostridium test positive 1
Constipation 1
Named as the suspect 1 reports of 18 that mention it at all
Serious outcome 50% hospitalisation, emergency room or worse
Life Threatening1
Hospitalization1
Required Intervention1

Reports are voluntary and unverified — they record what someone experienced while taking something, not what the compound caused. Counts skew towards products people take a lot of, and a serious outcome is more likely to be reported than a mild one, so these are not rates. How we filter them →

What actually reaches you

The label counts the carrier, your body does not
Absorption Very high 90 of 100 · best absorbed form of this compound
Delivered daily 9 mg
Cost per 100 mg delivered $5.56 comparative — uses the absorption score, not a measured percentage

Works better with

3 documented
+
Aloe Vera

Enhanced skin healing and reduced irritation

Aloe soothes while tea tree provides antimicrobial effects · level C
+
Niacinamide

Synergistic acne treatment and anti-inflammatory support

Complementary anti-acne mechanisms with reduced irritation · level C
+
Zinc Topical

Enhanced antimicrobial and anti-inflammatory effects

Both provide antimicrobial and anti-inflammatory skin benefits · level C

What not to take with Tea Tree Oil

2 documented
!
Benzoyl Peroxide

Combined use may increase skin irritation

Both can be irritating when used together · moderate significance
!
Retinoids Topical

Combined use may increase skin sensitivity and irritation

Both can cause skin irritation and dryness · moderate significance

Medication interactions

Discuss these with a pharmacist before combining
topical-acne-medications Minor to moderate

May increase skin irritation when combined

What to do: Use separately or reduce concentration

photosensitizing-medications Minor

May increase photosensitivity in some individuals

What to do: Use sun protection

no-systemic-interactions None

No known systemic drug interactions with topical use

What to do: Safe topical use

Available forms

bioavailability compared
Tea Tree Essential Oil (Standardized Terpinen-4-ol) 90

Tea Tree Essential Oil (Standardized Terpinen-4-ol): Clinically proven acne treatment, Powerful antimicrobial, Fast acting, Natural antibiotic

Food sources

before you supplement
Pure tea tree essential oil 100% concentrated oil · 90
Tea tree oil products (diluted) Various concentrations (5-25%) · 85
Not found in foods External use essential oil only · N/A
WARNING: Not for internal use Toxic if ingested · Dangerous

Too little

deficiency signs
  • Not applicable (herbal supplement, not essential nutrient):
  • General symptoms addressed by tea tree oil:
  • Acne and frequent skin breakouts
  • Recurrent skin infections
  • Fungal skin conditions
  • Poor wound healing with infection risk
  • Generally compromised skin antimicrobial defenses

Too much

toxicity signs
  • Concerns with improper use:
  • Skin irritation and contact dermatitis
  • Allergic skin reactions
  • Oral toxicity if ingested (nausea, vomiting, CNS effects)
  • Eye irritation if contact occurs
  • Respiratory irritation with excessive inhalation

Who benefits most

acne-treatment-mild-moderate

Clinically proven acne treatment effective for mild to moderate acne

5-10% dilution applied twice daily
skin-infections-bacterial-fungal

Powerful antimicrobial for treating various skin infections

5-15% dilution applied 2-3 times daily
wound-care-antiseptic

Effective antiseptic for preventing infection in cuts and wounds

5-10% dilution applied as needed
fungal-infections-athletes-foot

Natural antifungal treatment for athlete's foot and nail fungus

10-25% dilution applied twice daily
general-skin-antiseptic

General antimicrobial protection for skin health maintenance

5% dilution as needed

Where to buy it

compare forms first

Look for Tea Tree Oil at 5-15% topical dilution per serving. The form that matters here is Tea Tree Essential Oil (Standardized Terpinen-4-ol).

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How it works

  • Terpinen-4-ol provides potent antimicrobial effects against bacteria, fungi, and viruses
  • Anti-inflammatory compounds reduce skin inflammation and promote healing
  • Penetrates skin and hair follicles to reach infection sites
  • Disrupts microbial cell membranes leading to pathogen death
  • Reduces sebum production and comedone formation in acne
  • Provides broad-spectrum antiseptic protection

Key findings

what the evidence supports
  • Clinically proven as effective as benzoyl peroxide for acne
  • Strong evidence for antimicrobial effects against skin pathogens
  • Effective antifungal properties for various skin fungal infections
  • Good safety profile when properly diluted for topical use

Sources: NIH Examine.com · data reviewed 2026-08-02

Compiled by Denis, who maintains this database and holds no medical qualification — every figure here is sourced or derived, never asserted. How we calculate it →

Common questions

What are the benefits of Tea Tree Oil?

Documented effects: Clinically proven acne treatment; Antimicrobial skin protection; Antiseptic wound care; Fungal infection treatment. Evidence-based acne treatment comparable to benzoyl peroxide

How much Tea Tree Oil should you take per day?

The common daily range is 5-15% topical dilution. By goal — acne treatment: 5-10% dilution applied twice daily; skin infections: 5-15% dilution applied 2-3 times daily; wound antiseptic: 5-10% dilution applied as needed; fungal infections: 10-25% dilution applied twice daily.

When is the best time to take Tea Tree Oil?

Twice daily topical. First effects are typically reported within Minutes to hours for antimicrobial effects, 2-4 weeks for acne improvement.

What are the side effects of Tea Tree Oil?

At excessive doses: Concerns with improper use:, Skin irritation and contact dermatitis, Allergic skin reactions, Oral toxicity if ingested (nausea, vomiting, CNS effects), Eye irritation if contact occurs. Safety rating at normal doses is 7 out of 10.

What should you not take with Tea Tree Oil?

Separate it from Benzoyl Peroxide, Retinoids Topical by two to four hours. Combined use may increase skin irritation

Does Tea Tree Oil interact with medications?

Documented interactions with topical-acne-medications, photosensitizing-medications, no-systemic-interactions. Discuss these with a pharmacist before combining.

How do you know if you need Tea Tree Oil?

The marker is Generally not needed - topical use only, optimal range Improved skin health and reduced infections. Common deficiency signs: Not applicable (herbal supplement, not essential nutrient):, General symptoms addressed by tea tree oil:, Acne and frequent skin breakouts, Recurrent skin infections.

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