PoreWise Skin concern
Teenage skin
Primary sourceTeenage skin: the skin concerns that show up in the teenage years, dominated by acne because its peak prevalence is between ages 15 and 20. The practical question is what care is appropriate during this period. The strongest evidence comes from a 2015 human trial: In a 12-week randomized trial of 80 subjects aged 12 and over with mild-to-moderate acne, a botanical anti-inflammatory OTC skincare regimen produced significantly lower closed-comedone counts than a benzoyl peroxide comparator at week 4 (P<0.001) and week 12 (P=0.006), with fewer inflammatory lesions at week 4 (P=0.016). 1 ingredient has evidence for Teenage skin: Tea tree leaf extract.
Acne most often begins in adolescence, and the studies here span people with acne, including a 2026 review that pooled seven studies and 445 patients. What has been measured is which care was tested and how much confidence the results deserve. The older single tea-tree-oil trial still carries Cochrane's low-quality rating, while the newer review rates the overall risk of bias as low.
Where the definition comes from
Source wording
“Acne vulgaris is one of the commonest inflammatory skin diseases seen worldwide … with a peak prevalence between age 15 years and 20 years.” — Layton & Ravenscroft, Lancet Child Adolesc Health 2023 (PMID 36525984).
Adolescent acne vulgaris: current and emerging treatments Lancet Child & Adolescent Health (Layton AM, Ravenscroft J)
Efficacy and Safety of Melaleuca alternifolia (Tea Tree) Oil for Acne — A Systematic Review and Meta-Analysis Phytotherapy Research (Ye Y, et al.)
Ingredients at a glance
2015 · 80 people · subjects aged 12+ with mild-to-moderate acne · PMID 26659934
| Ingredient | Measured outcome | Based on | Certainty | Year |
|---|---|---|---|---|
| — | Skin effect | Human trial | Moderate | 2015 |
| Tea tree leaf extract | Skin effect | Review article | Moderate | 2026 |
| Tea tree leaf extract | Skin effect | Human trial | Moderate | 2007 |
Studies and results
- Efficacy and Safety of Melaleuca alternifolia (Tea Tree) Oil for Acne — A Systematic Review and Meta-Analysis
A 2026 systematic review and meta-analysis pooled seven clinical studies of tea tree oil for acne (445 patients in total). Acne severity was lower with tea tree oil than with the control treatments (pooled odds ratio 0.74, 95% CI 0.63 to 0.88), adverse events were mostly local and mild, and the reviewers judged the overall risk of bias as low.
Review article · 2026 · 445 people · patients across seven clinical studies of acne · Acne severity across seven clinical studies of topical tea tree oil, the condition that most often starts in the teenage years. · The pooled result is a modest reduction in severity. The seven studies used different tea tree oil formulations and the follow-up was short; the authors call for larger trials with standardised formulas. It also reports more mild itching, dryness and stinging in some comparisons.
- The efficacy of 5% topical tea tree oil gel in mild to moderate acne vulgaris: a randomized, double-blind placebo-controlled study
In a randomized, double-blind, placebo-controlled trial of 60 people with mild-to-moderate acne, 5% tea tree oil gel was 3.55 times more effective than placebo in improving total lesion counts and 5.75 times more effective in improving the acne severity index over 45 days.
Human trial · 2007 · 60 people · people with mild-to-moderate acne · Total acne lesion counts and acne severity index over 45 days. · Cochrane rates tea tree oil evidence for acne as low quality, based largely on this single 60-participant trial.
Study limits
Study conditions and measured outcomes.
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ev-bumps-closed-comedones-otc-rct Human trial · 2015
The comparator is an active benzoyl peroxide regimen.
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Tea tree leaf extract Review article · 2026
The pooled result is a modest reduction in severity. The seven studies used different tea tree oil formulations and the follow-up was short; the authors call for larger trials with standardised formulas. It also reports more mild itching, dryness and stinging in some comparisons.
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Tea tree leaf extract Human trial · 2007
Cochrane rates tea tree oil evidence for acne as low quality, based largely on this single 60-participant trial.
Products with a basis for this
1 products · Glow Serum : Propolis + Niacinamide · 2015 · 80 people · subjects aged 12+ with mild-to-moderate acne · PMID 26659934
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Beauty of Joseon
Glow Serum : Propolis + Niacinamide
- Tea tree leaf extract 2 findings
Research-backed approaches
These studies measured finished products and whole routines.
- 1 Skin effectAssessing the Value of Botanical Anti-Inflammatory Agents in an OTC Acne Treatment Regimen
In a 12-week randomized trial of 80 subjects aged 12 and over with mild-to-moderate acne, a botanical anti-inflammatory OTC skincare regimen produced significantly lower closed-comedone counts than a benzoyl peroxide comparator at week 4 (P<0.001) and week 12 (P=0.006), with fewer inflammatory lesions at week 4 (P=0.016).
Human trial · 2015 · 80 people · subjects aged 12+ with mild-to-moderate acne · Closed-comedone and inflammatory lesion counts over 12 weeks. · The comparator is an active benzoyl peroxide regimen.
Common questions
- Which ingredients have been studied for Teenage skin?
- Ingredients with evidence for Teenage skin: Tea tree leaf extract.
- How many people were studied?
- 3 findings · 2015 · 80 people · subjects aged 12+ with mild-to-moderate acne · PMID 26659934
- What can I use for Teenage skin?
- Tea tree leaf extract · 2015 · 80 people · subjects aged 12+ with mild-to-moderate acne · PMID 26659934