Product

Good Molecules Niacinamide 10% Serum

Niacinamide 10% and almost nothing else, for $6. Simple, cheap, and carrying the same too-high-dose caveat as every 10% niacinamide serum.
At a Glance
Recommended

Niacinamide has real, specific evidence: it strengthens the skin barrier, reduces sebum, and fades hyperpigmentation by blocking pigment transfer into skin cells. That is some of the better-supported cosmetic ingredient science there is.

But dose matters. The strongest studies used about 5% for pigment and 2% for oil control, and no trial shows 10% works better. Higher doses do cause more flushing and irritation, so if your skin objects, that is likely why — and a 5% product may serve you better.

This is a bare formula: niacinamide in a simple base, with nothing added to buffer irritation and no zinc for extra oil control. That simplicity is a genuine plus if your skin reacts to things, since there are fewer suspects to troubleshoot.

Good Molecules Niacinamide Review (Can this $6 Serum Transform Your Skin?!)3:49 · Dermapedia on YouTube

Key facts

Key activeNiacinamide 10%
TextureLightweight liquid serum
Best forOily skin; anyone who wants niacinamide with no extras
Approximate price$6–$8
FragranceFragrance free

How it works

A short ingredient list is genuinely useful. If your skin reacts to things, a serum with almost nothing in it is easier to troubleshoot — there are fewer suspects.

Niacinamide has real, specific evidence: it strengthens the skin barrier, reduces sebum, and fades hyperpigmentation by blocking pigment transfer into skin cells. That is not marketing — it is some of the better-supported cosmetic ingredient science there is.

$6. For an ingredient this well-evidenced, that is remarkable.

Everyday habits

How to use it
  • When: morning or night.How much: a few drops on clean skin. Steps: apply before moisturizer and let it absorb. Sunscreen: for tone and pigment, pair with daily SPF for best results. If it flushes: the 10% dose is the likely cause; use less or every other day.
Who should be careful+

10% is higher than the evidence justifies. The best studies used 5% for pigment and 2% for oil. Nobody has shown 10% works better — but higher doses do cause more flushing and irritation. If your skin objects, that is likely why, and a 5% product would probably serve you better.

There is nothing in here to buffer the irritation. No soothing agents, no barrier support — just niacinamide in a simple base.

No zinc, unlike The Ordinary's version, so slightly less oil-control support for the same price.

Basic texture. It does what it says and nothing more.

Questions people ask+
Is 10% niacinamide better than 5%?No trial shows that. Higher doses can flush without a clear added benefit.
What does niacinamide do?It supports the barrier, reduces oil, and helps fade pigment.
Why is it so cheap?It is a simple, single-active formula — remarkable value.
Is it fragrance-free?Yes. The formula is fragrance-free.
Is the short ingredient list a downside?Not really. It means fewer things to react to.
Full ingredient list+

Water, Niacinamide 10%, Dipropylene Glycol, Glycerin, 1,2-Hexanediol, Betaine, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Xanthan Gum, Ethylhexylglycerin

References+

1. The effect of niacinamide on reducing cutaneous pigmentation and suppression of melanosome transfer (https://academic.oup.com/bjd/article-abstract/147/1/20/6635091) — Backs the claim that niacinamide fades hyperpigmentation by blocking melanosome (pigment) transfer into keratinocytes rather than acting on tyrosinase; the 5% formulation significantly reduced hyperpigmentation in a clinical trial. 2. The effect of 2% niacinamide on facial sebum production (https://scispace.com/papers/the-effect-of-2-niacinamide-on-facial-sebum-production-lsvhzy875g) — Supports the claim that niacinamide reduces sebum, and that the sebum evidence used a 2% concentration (lowered sebum excretion rate and casual sebum levels). 3. Mechanistic Basis and Clinical Evidence for the Applications of Nicotinamide (Niacinamide) to Control Skin Aging and Pigmentation (https://www.mdpi.com/2076-3921/10/8/1315) — Peer-reviewed review supporting that niacinamide strengthens the skin barrier by upregulating ceramide and other stratum corneum lipids, and reduces pigmentation by slowing melanosome transfer from melanocytes to keratinocytes. 4. Good Molecules Niacinamide Serum 30ml (https://www.goodmolecules.com/products/niacinamide-serum) — Confirms the product-specific facts: it is a 10% niacinamide serum priced at $6.00.