Is Tiam Vita B3 Source Serum the Ultimate Oily Skin Fix?

Skin Type Guide
This 10% niacinamide serum punches above its weight for oily, congested skin—without the irritation.
Expert Analysis · Honest Reviews · Real Results
💧 **The Oil Control That Doesn’t Fight Dirty**

My T-zone looked like a glazed donut by 11am. Every. Single. Day. Then I tried this serum on a whim — and my blotting paper stockpile is now collecting dust.

The real flex? It doesn’t nuke your moisture barrier. Most oil-fighters leave you flaky and tight. This one pulls sebum back without that tight-mask feeling.

🧪 **What’s in the Bottle**

It’s a 10% niacinamide serum for $18-22. The claim that got me: “visible pore tightening in 2 weeks.” I called bullshit. But here we are.

1. **10% Niacinamide** — Not the usual 5% starter dose. This is straight-to-business strength, but formulated to not sting.
2. **Zinc PCA** — The sebum whisperer. It doesn’t just dry oil — it tells your glands to calm the F down.
3. **Centella Asiatica** — The “sorry for hitting you hard” ingredient. Soothes the redness niacinamide can cause.
4. **No fragrance** — Zero. Not a single drop of essential oils. Your nose will be bored. Your skin won’t.

🔬 **Ingredients, No Fluff**

Niacinamide (10%) is the star — shrinks pores by normalizing cell turnover. Zinc PCA regulates oil production at the gland level. Centella calms inflammation so you don’t purge into a pizza face. No fillers, no alcohol, no bullshit.

✨ **The Sink-In Speed Test**

It’s a thin, watery gel that absorbs in 8 seconds flat. No tacky film. No waiting 10 minutes before moisturizer. First application felt cooling — almost like a light toner.

Week 2 surprise: My nose pores actually looked smaller. Not *gone* — I’m not a Photoshop filter. But visibly less crater-like. Downside? It pills if you layer too much moisturizer on top. Let it fully dry first.

💡 **One Thing**: Apply to damp skin — not bone-dry. It spreads thinner, absorbs faster, and reduces the chance of pilling.

🧴 **The Honest Verdict**

Oil production dropped by about 40%. Pores look cleaner, not smaller — but clean pores look smaller, so… same effect. Texture is smoother. What didn’t change: I still get the occasional hormonal chin zit. This isn’t a spot treatment.

✅ **Buy if** you’re oily-to-combo and want visible pore refinement without peeling like a lizard.
⏭️ **Skip if** you have dry skin or are new to niacinamide — start with 5% first.
💰 **Worth it?** $18 for 30ml that lasts 3 months with daily use. That’s six cents a day for better skin math.

📊 **One Serum, One Job, Done Right**

It does exactly what it says — controls oil, refines pores, no drama. For the price, it’s the best niacinamide I’ve used under $30.

7.8/10 — Oil tamer, not a miracle worker

🛍️ **Where to Buy**: YesStyle or StyleKorean. Grab the travel size first if you’re nervous about the 10% strength.