Tea tree oil, derived from the leaves of Melaleuca alternifolia, has been the subject of growing scientific interest for its broad antimicrobial and anti-inflammatory properties. Research suggests that tea tree oil demonstrates meaningful activity against a range of bacteria, fungi, and viruses, which has made it a popular addition to bathwater as a folk remedy for supporting general skin health. Studies indicate that diluted tea tree oil may help manage mild acne and certain skin irritations, with its effectiveness linked to the compound terpinen-4-ol, which appears to modulate inflammatory responses. Adding a few drops to a warm bath is a longstanding home practice, though individual skin sensitivity varies, and patch testing is often recommended in the literature to help minimize the risk of irritation.
Compare this supplementThese are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Oil | 10 % | Daily | Acne and mild skin infections - topical application | Used in several controlled studies for acne and superficial skin conditions |
| Oil | 5 % | Twice daily | Acne treatment - topical gel or solution applied to affected areas | Common in clinical trials; 5% TTO gel compared to benzoyl peroxide in RCTs |
| Oil | 100 % | As needed | Antimicrobial wound cleansing - diluted in water or carrier oil before use | Pure TTO referenced in antimicrobial in vitro and clinical studies; requires dilution for skin use |
| Oil | 25–50 % | Twice daily | Nail fungus (onychomycosis) - topical application to affected nails | Based on RCTs evaluating antifungal efficacy of TTO solutions |
| Oil | 0.5–1 % | Daily | Scalp health and seborrheic dermatitis - shampoo formulation | 5% shampoo diluted to ~0.5-1% in some trials; 5% shampoo studied in RCT for dandruff |