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Tea Tree Oil: does it work, and at what %?
Tea Tree Oil is one of the actives we grade on evidence, not marketing. The benefit is real — but only when the dose clears the threshold the research supports. Here's the number, and the products that actually hit it.
The verdict: A randomized, double-blind, placebo-controlled trial found 5% tea tree oil gel significantly reduced inflammatory and non-inflammatory acne lesions versus placebo, and a separate comparative trial found 5% tea tree oil comparable to 5% benzoyl peroxide for mild-to-moderate acne with slower onset and fewer side effects.
How we grade Tea Tree Oil
We check the disclosed concentration against the effective threshold from peer-reviewed dermatology literature and regulatory monographs, then weigh the formulation and any product-specific study. The grade is computed from the open rubric — re-run it on any ingredient list and you get the same letter. Also labeled as Melaleuca alternifolia leaf oil, Melaleuca oil.
Products with a disclosed effective dose
We haven't yet graded a product that discloses an effective dose of Tea Tree Oil — most brands won't publish the concentration. As brands disclose (or get Verified), graded products will appear here. Browse the full index →
Common questions
What concentration of Tea Tree Oil is effective?
On Visage Theory's rubric, Tea Tree Oil reaches an effective dose at 5% and a strong, research-backed dose at 5%. Below that, the labeled benefit is unlikely no matter how good the marketing is.
Is more Tea Tree Oil always better?
Not necessarily — past the effective range you mostly add irritation risk, not benefit. What matters is clearing the threshold in a stable formula, which is exactly what our grade checks.
How do I know a product actually contains an effective dose of Tea Tree Oil?
Most brands list the active but hide the concentration. When the dose isn't disclosed we can't confirm efficacy, so we withhold a grade rather than guess. Products that disclose an effective dose are graded and listed below.
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