Numbuzin · Serum
No.3 Skin Softening Serum
OY Korea #5 serumUS stock
The 'glass skin filter in a bottle' serum: bifida and galactomyces ferments that smooth texture until makeup glides. Numbuzin's numbered-bottle branding made it TikTok's easiest recommendation.
★ 4.53,900 reviews
BEvidence grade
$26Best total · duties in
lightTexture · Serum
Is this right for your skin? — take the 60-second quiz and this box becomes a personal verdict.
Ingredient check⚠ 1 caution flag
✓ Fragrance-free⚠ Fungal-acne safe✓ No drying alcohol✓ Essential-oil free✓ Pregnancy-cautious free
Evidence checkGrade B · MFDS ✓
🇰🇷 MFDS-certified functional cosmetic — brightening (미백) · anti-wrinkle (주름개선)Filed with Korea's FDA as 「넘버즈인보들보들결세럼」 — a regulator-reviewed efficacy claim, not a marketing one.
Grade B — Ferment complex disclosed; strong recent ratings, shorter track record than the classics.
How grading works
Scored on clinicals · certifications · cross-platform rating consistency · transparency. Brands can't pay to change this.
What Korea says#5 serum
#5 serum · Olive Young Korea · The texture-filter serum of the ferment wave
"Skin texture gets so smooth, makeup stops separating."Translated from a Korean review · original: "화장이 겉돌지 않게 결이 정리돼요."
Reviews1 seeded · skin-twin filter
About these sample reviews
The profile cards below are illustrative demo entries showing how skin-twin matching will work — not real testimonials; replaced by verified creator reviews at launch. Your worked/didn't votes are real.
MinaCombinationLight–Medium toneTextureDullness✓ Worked for them
My foundation sits noticeably better. Glow is real.
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We link out instead of copying — full reviews belong to their authors and platforms.
Where to buybest total $26
| Retailer | Price | Ship + duty | Total | |
|---|---|---|---|---|
| Amazon ✓ official Official store — verify seller before launch Pays: Visa · MC · Amex · Discover · Amazon Pay · Affirm | $26 | — | $26BEST | Shop → |
| Olive Young Global ✓ official Ships from Korea 7–14d · +15% duty Pays: Cards · PayPal · Apple Pay · Alipay+ | $21 | $10.20 | $31.20 | Shop → |
Totals include estimated import duty on Korea-shipped orders (15%, post–de minimis). Links open retailer search; production uses exact product affiliate links. Payment methods indicative — verify at checkout.
Similar & possibly cheaper
Ma:nyo — Bifida Biome Complex Ampoule$30 · shares Bifida ferment, Galactomyces fermentMissha — Time Revolution Night Repair Ampoule 5X$35 · shares Bifida ferment, NiacinamideMedicube — PDRN Pink Peptide Serum$29 · shares NiacinamideSungboon Editor — Green Tomato Pore Lifting Ampoule$27 · shares Niacinamide