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Head-to-head evidence comparison — which supplement is right for you?
Finasteride (topical) vs Hydroquinone: Hydroquinone has the stronger overall evidence (7 vs 6.5/10); the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
Hydroquinone 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
Apply finasteride 0.25% topical solution to the scalp once daily. Lower applied volumes reduce serum DHT less while still cutting scalp DHT substantially.
evening
Finasteride 0.25% topical solution
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
immediate
24 weeks
24 weeks
1 week
Throughout
8-12 weeks
Throughout
Months to years
Efficacy and safety of topical finasteride spray solution for male androgenetic alopecia: a phase III, randomized, controlled clinical trial
J Eur Acad Dermatol Venereol (2022) · Rct · n=458
The pivotal trial: phase III, double-blind, DOUBLE-DUMMY, so it compares topical against placebo AND against oral finasteride in the same study.
Effects of a novel finasteride 0.25% topical solution on scalp and serum dihydrotestosterone in healthy men with androgenetic alopecia
Int J Clin Pharmacol Ther (2016) · Rct · n=50
⚠️ THE CAVEAT THAT MATTERS: serum DHT fell 60-70%. "Topical avoids systemic exposure" is not what this study shows at the higher doses.
Comparing the therapeutic effects of finasteride gel and tablet in treatment of the androgenetic alopecia
Indian J Dermatol Venereol Leprol (2009) · Rct · n=45
A direct head-to-head of gel against tablet, double-blind and double-dummy, six months.
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
Hydroquinone has a higher evidence score (7/10 vs 6.5/10) and wins in 2 of 3 categories.
No known interactions between Finasteride (topical) and Hydroquinone have been documented in our database. However, always consult a healthcare provider before combining supplements.
AM/PM order, what to combine vs separate, and why sunscreen always comes first.
The depigmenter playbook (hydroquinone, azelaic, tranexamic, vitamin C) with sunscreen as the spine.
Commonly recommended vs ask-your-clinician vs avoid — a general, safety-first overview.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.