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?
Benzoyl Peroxide wins 1 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 Benzoyl Peroxide and Salicylic Acid (topical) have evidence — compare verdict strength side-by-side.
Topical OTC use. Benzoyl peroxide is used at 2.5-10% in gels, creams, and washes, applied to acne-prone areas once or twice daily; lower strengths (2.5-5%) are usually as effective as 10% with less irritation. There is no oral or systemic dose — it is not ingested. It is often combined with a retinoid (e.g. adapalene) for greater effect. This library does not provide an ingestion protocol.
any
Leave-on gel/cream (2.5-5%) or a fixed combination with a retinoid
Topical OTC use. Leave-on and wash-off acne products contain 0.5-2% salicylic acid, applied to affected areas once or twice daily and built up as tolerated; professional peels (20-30%) are applied in-office. There is no oral or systemic dose in this context — it is not ingested (and large-area/high-concentration use can cause systemic salicylate absorption, so follow label limits). This library does not provide an ingestion protocol.
any
Leave-on or wash-off acne product (0.5-2% salicylic acid)
Throughout
4-12 weeks
Throughout
First weeks
Throughout
4-12 weeks
4-12 weeks
Throughout
Topical benzoyl peroxide for acne.
Cochrane Database Syst Rev (2020) · Systematic review
Pooled 120 RCTs (29,592 participants); BPO more effective than placebo/no treatment for participant-reported improvement (RR 1.27, 95% CI 1.12 to 1.45)
Efficacy of topical treatments for mild-to-moderate acne: A systematic review and meta-analysis of randomized control trials.
J Eur Acad Dermatol Venereol (2025) · Meta analysis
Network meta-analysis of 35 RCTs (33,472 participants) comparing nine topical acne agents
Adapalene-benzoyl peroxide, a fixed-dose combination for the treatment of acne vulgaris: results of a multicenter, randomized double-blind, controlled study.
J Am Acad Dermatol (2007) · Rct · n=517
517 subjects randomized double-blind to adapalene-BPO, adapalene, BPO, or vehicle for 12 weeks
Comparison of alpha- and beta-hydroxy acid chemical peels in the treatment of mild to moderately severe facial acne vulgaris.
Dermatol Surg (2008) · Rct · n=20
Split-face, double-blind RCT (n=20) comparing 30% salicylic acid vs 30% glycolic acid peels, six treatments at 2-week intervals
Comparison of chloroxylenol 0.5% plus salicylic acid 2% cream and benzoyl peroxide 5% gel in the treatment of acne vulgaris: a randomized double-blind study.
Drugs Exp Clin Res (2003) · Rct · n=37
12-week double-blind RCT (n=37) comparing a 2% salicylic acid (plus chloroxylenol) cream vs benzoyl peroxide 5% gel twice daily
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
Randomized trial (n=50) of 30% salicylic acid vs 45% mandelic acid peels, six sessions over 12 weeks for mild-to-moderate acne
Benzoyl Peroxide has a higher evidence score (9/10 vs 5/10) and wins in 1 of 3 categories.
For clearer skin (acne), Benzoyl Peroxide has a higher relevance score (85 vs 75).
No known interactions between Benzoyl Peroxide and Salicylic Acid (topical) have been documented in our database. However, always consult a healthcare provider before combining supplements.