Does Niacinamide Really Reduce Pores? We Tested The Ordinary Serum

Myth Busted
We put the viral serum to the test to see if it can truly shrink the appearance of pores or if it’s just skincare hype.
Expert Analysis · Honest Reviews · Real Results
1.🔬The Pore Shrinkage Obsession

We all want that filtered finish. So I used the viral serum for a month — no filter.

The real test? My nose, a permanent map of visible pores.

2.The Hype Bottle

It’s The Ordinary‘s Niacinamide 10% + Zinc 1%. Under $7. The claim? Visibly reduce enlarged pores. A big promise.

1

Texture

Water-based, clear serum.

2

Scent

None. Smells like a lab (in a good way).

3

Frequency

Once or twice daily.

A man laying on a bed with a towel on his head

Photo: Victor Meza / Unsplash

3.🧪What’s In The Potion

Two main players. Niacinamide (Vitamin B3) regulates oil and calms inflammation. Zinc PCA helps with sebum control. That’s the pore-shrinking theory.

  • Niacinamide 10%: Oil regulation, brightening
  • Zinc PCA 1%: Sebum absorption
  • Tamrindus Indica Seed Gum: Gel texture
  • Pentylene Glycol: Hydration
a magazine with a bottle of green liquid next to it

Photo: Harper Sunday / Unsplash

4.👁️The Sticky Truth

Applies like slippery water. Dries down fast — but can pill if you layer too much, too soon.

Surprise by week two? My t-zone was less of an oil slick by 3 PM. Pores looked… cleaner. Not smaller, just less filled.

💡

One Thing: Use half a dropper MAX. Let it dry for 60 seconds before moisturizer. Trust me.
woman putting makeup in front of mirror

Photo: kevin laminto / Unsplash

5.The Mirror Check

After 4 weeks, pores appear *refined* — not erased. Blackheads reduced. Shine is genuinely controlled. But it’s not a Photoshop tool.

Buy if
You’re oily/combo and want to manage shine and congestion.
⏭️

Skip if
You have dry or sensitive skin — this could be irritating.
💰

Worth it?
For $7? Absolutely. It’s a brilliant oil regulator.
a woman with a towel on her head and a jar of cream on her face

Photo: Kaeme / Unsplash

6.💡The Final Word

It doesn’t shrink pores. It declutters them. A crucial difference — but the result is a smoother, less shiny canvas.

7.5/10
A brilliant oil controller, not a pore eraser.
🛍️

Where to Buy: Sephora or the brand site. They’re always in stock, no rush.