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Head-to-head evidence comparison — which supplement is right for you?
Benzoyl Peroxide 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
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
Prescription topical. Hydroquinone is used at 2-4% (often as the triple-combination with a retinoid and a mild corticosteroid), applied to pigmented areas usually at night, in time-limited courses (commonly with treatment breaks) under clinician supervision, always with daily sunscreen. There is no oral or systemic use. Avoid indefinite continuous use because of ochronosis risk. This library does not provide an ingestion protocol.
evening
Hydroquinone 2-4% cream or the triple-combination (with retinoid + mild steroid), under a clinician
Throughout
4-12 weeks
Throughout
First weeks
Throughout
8-12 weeks
Throughout
Months to years
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
Efficacy and safety of a new triple-combination agent for the treatment of facial melasma.
Cutis (2003) · Rct · n=641
Two pooled 8-week multicenter randomized investigator-blind trials (n=641) of the triple-combination (tretinoin 0.05% + hydroquinone 4% + fluocinolone 0.01%) vs the three dual pairings
Efficacy and safety of a novel triple combination cream compared to Kligman's trio for melasma: A 24-week double-blind prospective randomized controlled trial.
J Eur Acad Dermatol Venereol (2023) · Rct · n=40
24-week double-blind RCT (n=40) using Kligman's trio (hydroquinone + retinoic acid + corticosteroid) as the active gold-standard comparator
Systematic review of randomized controlled trials on interventions for melasma: an abridged Cochrane review.
J Am Acad Dermatol (2014) · Systematic review
Abridged Cochrane review of 20 RCTs (2125 participants) across 23 melasma treatments
Benzoyl Peroxide has a higher evidence score (9/10 vs 7/10) and wins in 2 of 3 categories.
No known interactions between Benzoyl Peroxide and Hydroquinone have been documented in our database. However, always consult a healthcare provider before combining supplements.