Does Niacinamide Really Cause Flushing? We Test a Viral Serum

Myth Busted

We put the notorious ‘niacinamide flush’ to the test with the internet’s most debated serum to separate fact from fear.

Expert Analysis · Honest Reviews · Real Results

1.🔬The Great Flush Test

Slathered my face in the infamous 10% Niacinamide Booster from The Ordinary. Waited for the tomato-face.

It never came. The internet lied — or at least oversimplified. The real story is in the formula, not just the percentage.

2.🤔The Viral Suspect

A $6 serum that promises pore-shrinking and oil control. The claim that hooked me? “Reduces the look of blemishes.” For six bucks, I’ll be your guinea pig.

Concentration

A straight 10% niacinamide — no fancy blends.

Texture

Water-based, so it layers under anything.

Price

The price of a fancy latte. Seriously.

a couple of bottles of liquid sitting on top of a bed

Photo: sarah b / Unsplash

3.⚠️What’s Actually In It

It’s brutally simple. Niacinamide is the star, zinc is the sidekick. No fragrance, no fluff. This is where the flush myth dies — a clean formula reduces irritation risk.

Niacinamide (10%): Fades dark spots, regulates oil
Zinc PCA: Controls sebum, mildly anti-inflammatory
Tamarinus Indica Seed Gum: The texture magician — makes it slick
Pentylene Glycol: Hydration + helps everything else sink in

Photo: Lina Verovaya / Unsplash

4.🧪Skin Feel & Reality

Weird, slick texture — like slightly sticky water. Absorbs in 15 seconds flat. Leaves a faint, dry-touch finish.

Week 2: My t-zone was noticeably less shiny by 3 PM. Unexpected win? It made my moisturizer pill if I rubbed too hard. A gentle pat is mandatory.

💡

One Thing: Use ONE drop for your whole face. Two drops guarantees pilling. It’s that potent.

5.✅The Real Results

Oil production? Halved. Pore appearance? Slightly refined. Major blemish clearing? Didn’t happen. It’s a brilliant regulator, not a miracle worker.

✅

Buy if

You have oily, combination, or congestion-prone skin.

⏭️

Skip if

You’re super dry or sensitive — this can be slightly drying.

💰

Worth it?

At $6, it’s a no-brainer experiment for oily skin.

6.💡The Final Word

The flush fear is overblown with this one. It’s a brilliantly basic, effective oil-controller. Just don’t expect a glow-up.

8.0/10

A cheap, effective workhorse for shine.

🛍️

Where to Buy: Direct from The Ordinary or Sephora. Get the travel size first to test your skin’s tolerance.