Loading…
We use essential cookies (authentication, your saved goals/stack) by default. With your permission we'll also enable privacy-respecting analytics (Vercel Web Analytics, anonymous load-time metrics) and error-replay diagnostics (Sentry — DOM snapshots only when an error fires) so we can fix bugs faster. Learn more about cookies
Head-to-head evidence comparison — which supplement is right for you?
Mandelic Acid (topical) wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Mostly mechanism / observational
Top outcomes
Verdict
Mostly mechanism / observational
Top outcomes
Shared outcomes (1)
Outcomes where both Mandelic Acid (topical) and Tea Tree Oil (topical) have evidence — compare verdict strength side-by-side.
Topical cosmetic only. Leave-on mandelic acid is used at roughly 5-10% in serums; professional peels use higher strengths (often a salicylic-mandelic combination). Apply to clean skin, building frequency as tolerated, with daily sunscreen. There is no oral or systemic dose — it is not ingested. This library does not provide an ingestion protocol.
evening
Leave-on serum (≈5-10% mandelic acid) or a professional (salicylic-)mandelic peel
Topical cosmetic only. Acne trials used a 5% tea tree oil gel applied to affected areas (typically twice daily). Avoid undiluted (100%) application, which is more irritating and sensitizing. Patch-test first, and use fresh, properly stored product (oxidized oil raises allergy risk). There is no oral or systemic dose — it is not ingested (and tea tree oil is toxic if swallowed). This library does not provide an ingestion protocol.
any
5% tea tree oil gel (the trial-tested strength)
Throughout
8-12 weeks
8-12 weeks
Throughout
Throughout
8-12 weeks
Weeks
Throughout
Comparative study of efficacy and safety of 45% mandelic acid versus 30% salicylic acid peels in mild-to-moderate acne vulgaris.
J Cosmet Dermatol (2020) · Rct · n=50
RCT (n=50): 45% mandelic acid vs 30% salicylic acid peels every 2 weeks for six sessions over 12 weeks
Comparative Evaluation of Efficacy and Tolerability of Glycolic Acid, Salicylic Mandelic Acid, and Phytic Acid Combination Peels in Melasma.
Dermatol Surg (2016) · Rct · n=90
RCT (n=90): glycolic 35% vs salicylic-mandelic vs phytic acid peels for melasma over 12 weeks
Comparative Study of 35% Glycolic Acid, 20% Salicylic-10% Mandelic Acid, and Phytic Acid Combination Peels in the Treatment of Active Acne and Postacne Pigmentation.
J Cutan Aesthet Surg (2019) · Rct · n=45
RCT (n=45): glycolic vs salicylic-mandelic vs phytic peels biweekly for six sessions
A comparative study of tea-tree oil versus benzoylperoxide in the treatment of acne.
Med J Aust (1990) · Rct · n=124
Single-blind RCT in 124 patients comparing 5% tea tree oil gel with 5% benzoyl peroxide lotion for mild-to-moderate acne
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) · Rct · n=60
Randomized double-blind placebo-controlled trial (n=60) of 5% tea tree oil gel vs placebo over 45 days
Tea tree oil gel for mild to moderate acne; a 12 week uncontrolled, open-label phase II pilot study.
Australas J Dermatol (2017) · Pilot · n=18
Open-label, uncontrolled 12-week phase II pilot of a tea tree oil gel and face wash applied twice daily (n=18)
Mandelic Acid (topical) has a higher evidence score (5/10 vs 5/10) and wins in 2 of 3 categories.
For clearer skin (acne), Tea Tree Oil (topical) has a higher relevance score (62 vs 60).
No known interactions between Mandelic Acid (topical) and Tea Tree Oil (topical) have been documented in our database. However, always consult a healthcare provider before combining supplements.