Niacinamide (Topical)
Niacinamide / Nicotinamide (Topical)
Well-established skin-barrier ingredient. Modest hair-shaft data; no AGA RCT.
How Niacinamide (Topical) works — and how well we know it
Topical niacinamide supports skin barrier function and has documented anti-inflammatory properties at the cosmetic level. Hair-specific mechanism is unclear.
topical
2–5% in topical formulations.
Used widely in skincare for barrier-function support. Distinct from oral niacin. Included in Vegamour topicals.
General scalp barrier support as part of a broader formulation. Not a targeted AGA intervention.
Evidence distribution across 1 claims
Why the grade is D. Well-established cosmetic ingredient with skin-barrier evidence; one small JID study showed modest hair-shaft effects; no AGA-specific RCT.
Every claim, traced back to its source
We took every major claim made about Niacinamide (Topical) and matched it to the specific experimental model behind it. Click a claim to see the model, the finding, and our assessment of how much weight it deserves.
1 claims · evidence-by-evidence breakdown
1In VitroWeight: LowTopical niacinamide improves scalp barrier function but no AGA-specific RCT existsWell-tolerated barrier ingredient; no AGA RCT to support it as an active treatment.
Skin barrier studies (predominantly cosmetic literature) plus one small study examining niacinamide effects on hair shafts.
Improves stratum corneum barrier function in cosmetic studies. Hair shaft effects are modest and inconsistently demonstrated.
A reasonable supporting ingredient in a multi-active topical, but not a primary AGA actor. Vegamour and others include it partly for its 'familiar to consumers' positioning.
- Bissett DL, Oblong JE, Berge CA (2005). Dermatol Surg PMID 16029679
What's still missing from the science
- AGA-specific RCT of topical niacinamide.
Our verdict on Niacinamide (Topical)
Not in our formulary yet
We don't carry this ingredient. We only formulate around actives where the evidence — and the safety profile — is strong enough to recommend with confidence. As the data matures, we may revisit.
Related treatments
How does Niacinamide (Topical) stack up against its closest peers?
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