Tea tree is a tree with white flowers. Oil from its leaves has been used to get rid of harmful bacteria. It has also been used to promote healing in skin problems such as wounds and acne. Tea tree is most often applied as an oil, but it is also available as a gel, cream, or ointment.Dosages
There are no advised doses for tea tree.
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It is likely safe to use tea tree oil on the skin, but allergic reactions, skin irritation, and inflammation may happen in some people.L1, L2 Not enough studies have been done to say whether it is safe to use for a long period.
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A1. Cao H, Yang G, et al. Complementary therapies for acne vulgaris. Cochrane Database Syst Rev. 2015;1:CD009436.
A2. Enshaieh S, Jooya A, et al. The efficacy of 5% topical tea tree oil gel in mild to moderate acne vulgaris: a randomized, double-blind placebo-controlled study. Indian J Dermatol Venereol Leprol. 2007 Jan-Feb;73(1):22-25.
B. Athlete’s Foot
B1. Satchell AC, Saurajen A, et al. Treatment of interdigital tinea pedis with 25% and 50% tea tree oil solution: a randomized, placebo-controlled, blinded study. Australas J Dermatol. 2002 Aug;43(3):175-178.
C1. Satchell AC, Saurajen A, et al. Treatment of dandruff with 5% tea tree oil shampoo. J Am Acad Dermatol. 2002 Dec;47(6):852-855.
D. Eye mites
D1. Koo H, Kim TH, et al. Ocular surface discomfort and Demodex: effect of tea tree oil eyelid scrub in Demodex blepharitis. J Korean Med Sci. 2012;27(12):1574-1579.
E1. Soukoulis S, Hirsch R. The effects of a tea tree oil-containing gel on plaque and chronic gingivitis. Aust Dent J. 2004 Jun;49(2):78-83.
F. Head lice
F1. Barker SC, Altman PM. A randomised, assessor blind, parallel group comparative efficacy trial of three products for the treatment of head lice in children—melaleuca oil and lavender oil, pyrethrins and piperonyl butoxide, and a “suffocation” product. BMC Dermatol. 2010;10:6.
G1. Joksimovic N, Spasovski G, et al. Efficacy and tolerability of hyaluronic acid, tea tree oil and methyl-sulfonyl-methane in a new gel medical device for treatment of haemorrhoids in a double-blind, placebo-controlled clinical trial. Updates Surg. 2012 Sep;64(3):195-201.
H. Idiopathic Hirsutism
H1. Tirabassi G, Giovannini L, et al. Possible efficacy of Lavender and Tea tree oils in the treatment of young women affected by mild idiopathic hirsutism. J Endocrinol Invest. 2013 Jan;36(1):50-54.
I. Molluscum Contagiosum
I1. Markum E, Baillie J. Combination of essential oil of Melaleuca alternifolia and iodine in the treatment of molluscum contagiosum in children. J Drugs Dermatol. 2012 Mar;11(3):349-354.
J1. Dryden MS, Dailly S, et al. A randomized, controlled trial of tea tree topical preparations versus a standard topical regimen for the clearance of MRSA colonization. J Hosp Infect. 2004 Apr;56(4):283-286.
K1. Buck DS, Nidorf DM, et al. Comparison of two topical preparations for the treatment of onychomycosis: Melaleuca alternifolia (tea tree) oil and clotrimazole. J Fam Pract. 1994 Jun;38(6):601-605.
K2. Syed TA, Qureshi ZA, et al. Treatment of toenail onychomycosis with 2% butenafine and 5% Melaleuca alternifolia (tea tree) oil in cream. Trop Med Int Health. 1999 Apr;4(4):284-287.
L1. Rubel DM, Freeman S, et al. Tea tree oil allergy: what is the offending agent? Report of three cases of tea tree oil allergy and review of the literature. Australas J Dermatol. 1998 Nov;39(4):244-247.
L2. Posadzki P, Alotaibi A, et al. Adverse effects of aromatherapy: a systematic review of case reports and case series. Int J Risk Saf Med. 2012 Jan 1;24(3):147-161.
Last reviewed July 2019 by EBSCO NAT Review Board
Eric Hurwitz, DC
Last Updated: 3/27/2020