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topical · for athlete's foot

Tea Tree Oil Solution (25-50%)

Reviewed by the Nimbera editorial team · Last updated May 2026

Satchell et al. 2002 randomized placebo-controlled blinded trial (n=158, Australasian Journal of Dermatology, PMID 12121393) found 50% tea tree oil solution produced marked clinical improvement in 68% vs. 39% placebo, and mycological cure in 64% vs. 31% (P < 0.05).$8-$20 per bottle

How to use

Apply a 25-50% tea tree oil solution or cream to clean, dry affected areas twice daily. Wash and thoroughly dry feet - especially between toes - before each application. Continue for 4 weeks even if symptoms resolve early to prevent relapse.

How it works

Terpinen-4-ol and other monoterpenes in tea tree oil (Melaleuca alternifolia) penetrate and disrupt the fungal cell membrane, causing leakage of intracellular contents and inhibiting Trichophyton rubrum and T. mentagrophytes growth at low minimum inhibitory concentrations.

Where to buy

Health food stores and pharmacies sell tea tree oil at 100% concentration for dilution, or purpose-made 25% and 50% foot creams/solutions. Thursday Plantation and Thursday Plantation Foot Cream are well-known brands.

Typical cost: $8-$20 per bottle

Safety notes

Do not use undiluted 100% tea tree oil directly on skin - it causes chemical burns and dermatitis. Concentrations above 25% can still cause mild irritation in sensitive individuals; discontinue if rash develops. Toxic if swallowed. Keep away from children and pets.

Drug & supplement interactions

  • Always tell your doctor or pharmacist about any supplements you take.
  • Interactions can occur with prescription medications, blood thinners, and immunosuppressants.
  • Herbal remedies can affect how the body absorbs or metabolises drugs.
  • Check drugs.com interactions checker before starting.

Clinical source

Satchell et al. 2002 - Australas J Dermatol (PMID 12121393)

This information is compiled from primary clinical literature and is for informational purposes only. It is not a substitute for professional medical advice. Read our full disclaimer.