Numbuzin No.5+ Vitamin Concentrated Serum 30ml
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100% Authentic
Sourced directly
from South Korea
Fast dispatch
1–2 days
Handled with care
Free shipping
over $59.99
From Canada
Even Skin Tone + Glowy Skin + Brightening
Reveal your brightest, most radiant skin yet with the numbuzin No.5+ Vitamin Concentrated Serum, a powerhouse K-beauty skincare serum formulated to fade dark spots, improve skin texture, and deliver a lit-from-within glow. Packed with 5% Niacinamide, 4% Tranexamic Acid, Glutathione, Vitamin C, and alpha-arbutin, this brightening serum targets uneven skin tone, hyperpigmentation, acne scars, and dullness — all while being gentle on sensitive skin. Perfect for those looking for vitamin C serum for dark spots or a niacinamide serum that brightens and hydrates, this serum delivers visible results in as little as 2-4 weeks.
✨ Why You’ll Love It
- Vitamin-Powered — Potent ingredients promote skin renewal and glow
- Light & Non-Greasy texture — Perfect for layering under moisturizer or makeup
- Clinically Proven Results — Noticeable brightening and reduced pigmentation fast

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Reduces pigmentation and brightens the skin
Soothes skin and suppress melanin synthesis
Key Ingredients
• Glutathione Helps with anti-aging network and brightening. • Vaccinium Vitis-Idaea Fruit Extract (604,074ppm) Brightens and skin complexion.
FREQUENTLY ASKED QUESTIONS
Is Numbuzin No.5+ serum suitable for sensitive or acne-prone skin?
Yes. The serum is alcohol-free, fragrance-free, silicone-free, and fungal-acne safe. It’s gentle enough for sensitive and blemish-prone skin, with ingredients like panthenol and ceramide NP soothing inflammation while ceramides and glycerin support the skin barrier.
Does it oxidize like other vitamin C serums?
No — Numbuzin uses a stable derivative of vitamin C, so it’s less prone to oxidation compared to traditional L-ascorbic acid serums. Keep the bottle away from direct sunlight and store it in a cool, dry place to preserve freshness.
Should I keep this serum in the fridge?
It is not required, but storing it in a cool, dark place (or fridge) can help keep the vitamins fresh and provide a soothing application experience.
Where This Fits In Your Routine
Use products in the right order for best results
STEP 7: SUN CARE
Protects skin from UV damage, dark spots, and premature aging.
The most important step for maintaining results long-term.
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STEP 1: CLEANSING
Removes oil, sunscreen, makeup & daily buildup.
Clean skin helps the rest of your routine absorb better.
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EXTRA STEP: EXFOLIATE
Removes dead skin cells to improve texture and help products absorb better.
Use only a few times per week. (1-3X WEEKLY)
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STEP 2: TONING
Rehydrates skin after cleansing and balances moisture levels.
Preps your skin so serums can work more effectively.
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STEP 3: SERUMS
Concentrated treatments that target specific concerns.
Great for acne, dark spots, dullness, fine lines & barrier repair.
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STEP 4: EYE CARE
Designed for the delicate under-eye area.
Helps with dryness, puffiness, dark circles & fine lines.
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STEP 5: MOISTURIZERS
Locks in hydration and strengthens your skin barrier.
Keeps skin soft, bouncy, and protected throughout the day or night.
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STEP 6: MASKS
An extra treatment step used a few times a week.
Boosts glow, clams irritation, or deeply hydrates tried skin.
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Complete Your Routine
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Have Questions?
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