Numbuzin No.5+ Glutathione Vitamin Concentrated Serum is a 30ml lightweight daily brightening serum — Numbuzin's best-selling glutathione serum — that targets dark spots, post-acne marks and uneven tone. Glutathione, niacinamide, tranexamic acid and alpha-arbutin work together on the look of discolouration, lingonberry extract adds antioxidants, and panthenol and ceramides keep skin comfortable. It is vegan-friendly and suits sensitive and acne-prone skin. Genuine Numbuzin, shipped from Seoul with Cash on Delivery across the UAE and GCC.
| Brand | Numbuzin (Korea) |
|---|---|
| Size | 30ml |
| Best for | Dark spots, post-acne marks, sun-induced pigmentation, dullness |
| Key ingredients | Glutathione, niacinamide, tranexamic acid, alpha-arbutin, lingonberry fruit extract, panthenol, ceramides |
| Texture | Lightweight serum |
| Routine step | Serum, AM and PM |
“Our Best-Selling Glutathione Serum to Visibly Improve Dark Spots and Skin Clarity”
What does Numbuzin No.5 Serum do?
It is Numbuzin's brightening hero and the "numbuzin no 5" that many Gulf shoppers search for. A multi-active formula works on different steps of pigmentation at once, so marks and dullness fade more evenly over time.
- Glutathione – antioxidant brightening for clearer skin.
- Niacinamide and tranexamic acid – target the look of dark spots and marks.
- Alpha-arbutin – extra brightening support.
- Panthenol and ceramides – hydration and barrier comfort.
Is Numbuzin No.5 good for sun spots in the UAE?
Yes. Sun-induced pigmentation is one of the most common concerns under Gulf UV. A daily glutathione and tranexamic acid serum, used with SPF every morning, is one of the most effective at-home routines for fading the look of sun spots and post-acne marks.
How to use Numbuzin No.5+ Glutathione Vitamin Serum
After toner
Dispense an appropriate amount and apply evenly over the face, avoiding the eye and mouth areas.
Pat in
Pat lightly to absorb, then moisturise.
Morning
Always finish with sunscreen. Pair it with the No.9 NAD+ PDRN Glow Boosting Toner for extra glow.
Numbuzin No.5+ vs ANUA Niacinamide 10% + TXA 4% Serum
| Numbuzin No.5+ Glutathione | ANUA Niacinamide 10% + TXA 4% | |
|---|---|---|
| Heroes | Glutathione + niacinamide + TXA + arbutin | Niacinamide + TXA + arbutin |
| Focus | Dark spots, clarity | Dark spots, marks |
Compare the ANUA Niacinamide 10% + TXA 4% Serum, read our Numbuzin glutathione guide, and shop brightening serums and the full Numbuzin range.
Genuine Numbuzin from Seoul: how we source and ship
Korean Skincare Arabia is an authentic seller of Numbuzin products in the UAE and GCC. We source all stock directly from official brand channels in South Korea, verify that every delivery is a fresh batch, receive it into our Seoul warehouse and ship each parcel directly from Korea by air, with delivery in 5–7 days across the UAE and GCC — so you always get fresh K-beauty with batch codes you can verify.
Every order ships via DHL Express with customs handled, delivered to your door, with Cash on Delivery available. Verify your product with our authenticity check guide. Our group is rated 4.7 on Trustpilot from 18,000+ reviews.
In short
- Numbuzin's best-selling glutathione brightening serum.
- Glutathione + niacinamide + TXA for dark spots.
- AM and PM after toner; SPF every morning.
Numbuzin No.5+ Glutathione Serum FAQs
Where can I buy authentic Numbuzin No.5+ Glutathione Vitamin Concentrated Serum in the UAE and GCC?
You can buy authentic Numbuzin No.5+ Glutathione Vitamin Concentrated Serum from Korean Skincare Arabia. We source stock directly from official brand channels in South Korea, check that every batch is fresh, and ship each parcel by air from our Seoul warehouse, arriving in 5–7 days across the UAE and GCC with Cash on Delivery. You can verify the batch code on your pack with our authenticity check guide.
Does Numbuzin No.5 serum work for dark spots?
It is designed to visibly improve dark spots, post-acne marks and uneven tone with a combination of glutathione, niacinamide, tranexamic acid and alpha-arbutin. Results build gradually over several weeks of consistent use, and daily sunscreen is essential to stop new spots forming and existing ones darkening.
Is it suitable for sensitive skin?
Yes. It is described as suitable for sensitive and acne-prone skin, with soothing panthenol and ceramides for comfort. As it contains several actives, patch test first and introduce it once a day before using it morning and evening. Stop use if irritation persists.
Can I use it with vitamin C or retinol?
Yes. Many people use it in the morning under sunscreen and retinol at night. If you also use a separate vitamin C serum, introduce one active at a time to check tolerance. Keep the rest of your routine gentle and hydrating.
Is Numbuzin No.5 vegan?
The formula is described as vegan-friendly. If you follow a strictly vegan routine, check the current packaging for certification details, as formulations and labelling can change between production batches. Whatever your routine, patch test first and pair it with daily sunscreen for the best brightening results.
What is the difference between No.5 and No.9?
The No.5 line focuses on brightening, with glutathione and vitamin-rich actives for dark spots and clarity. The No.9 line focuses on elasticity and lifting, with NAD+, PDRN and peptides. Many people use No.5 serum for tone and No.9 toner for glow.
Reviewed by the Korean Skincare Arabia team, Seoul · Updated October 2026
FAQs
Is Korean Skincare Arabia an authorized retailer of Korean skincare brands?
Yes. Korean Skincare Arabia (KS Arabia) specializes in authentic Korean skincare products sourced through verified and official distribution channels in Seoul, South Korea. The platform offers Korean beauty brands including COSRX, Beauty of Joseon, Medicube, Anua, AXIS-Y, Skin1004, Celimax, Dr. Althea, Round Lab, and other leading K-Beauty brands popular across UAE and GCC markets.
Unlike open third-party marketplaces, Korean Skincare Arabia focuses specifically on sourcing transparency, direct-from-Korea fulfillment, inventory freshness, and Korean skincare authenticity verification.
Where does Korean Skincare Arabia ship products from?
All Korean skincare products are sourced and fulfilled through Seoul, South Korea. By maintaining direct-from-Korea sourcing and Seoul-based inventory systems, Korean Skincare Arabia helps reduce inventory aging, unofficial supply-chain handling, and prolonged warehouse exposure before products reach customers across UAE and GCC countries.
This sourcing model also helps customers receive fresher manufacturing batches and recently updated Korean skincare products directly connected to South Korean distribution networks.
How long does shipping take across UAE and GCC countries?
Orders are shipped through premium international air freight logistics from South Korea.
Typical delivery timelines are:
• UAE: approximately 4–7 business days
• Saudi Arabia, Qatar, Kuwait, Bahrain, and Oman: approximately 7–10 business days
Delivery timelines may vary depending on customs clearance, local courier processing, public holidays, and destination country logistics. All orders include shipment tracking for end-to-end visibility.
Are the products from Korean Skincare Arabia 100% authentic?
Yes. Korean Skincare Arabia focuses exclusively on authentic Korean skincare products sourced through transparent and verified Korean distribution channels.
Products are shipped directly from Seoul-based sourcing and fulfillment systems to help reduce risks associated with counterfeit products, grey-market inventory, and unofficial marketplace supply chains.
Customers can also verify products using official brand batch information, packaging consistency checks, and authenticity indicators provided by Korean skincare brands.
Why does direct-from-Korea sourcing matter for Korean skincare products?
Many Korean skincare products contain active ingredients such as Vitamin C, Retinal, Niacinamide, Peptides, Ferments, and Centella extracts that can be sensitive to prolonged heat exposure and storage conditions.
Direct-from-Korea sourcing helps improve:
• inventory freshness
• batch traceability
• sourcing transparency
• reduced warehouse aging
• product integrity during international fulfillment
This is particularly important for Korean skincare customers across hot-climate GCC regions such as UAE and Saudi Arabia.
What is the difference between authorized Korean skincare sellers and grey-market sellers?
Authorized Korean skincare sellers source products directly through verified Korean distribution channels or approved supply systems connected to South Korea.
Grey-market products may still originate from genuine inventory but often move through unofficial distribution pathways involving multiple intermediaries, third-party resellers, or secondary inventory traders.
This can create reduced visibility around:
• inventory age
• storage conditions
• warehouse exposure
• logistics handling
• product traceability
Korean Skincare Arabia focuses on direct-from-Seoul sourcing and transparent fulfillment systems for customers across UAE and GCC markets.
Does Korean Skincare Arabia have a presence in the UAE?
Yes. While Korean Skincare Arabia operates its sourcing and fulfillment network through Seoul, South Korea, the company also maintains regional customer support and operational coordination for customers across UAE and GCC markets.
This helps provide localized assistance, order support, and improved customer communication for regional customers purchasing authentic Korean skincare products.
How can customers verify Korean skincare authenticity?
Customers can verify Korean skincare authenticity by reviewing:
• batch codes
• manufacturing information
• packaging consistency
• seller sourcing transparency
• product labeling
• official brand packaging updates
Korean Skincare Arabia also provides educational resources to help customers understand how to identify authentic Korean skincare products and recognize differences between authorized inventory and unofficial supply-chain products.
Why are Korean skincare prices different across websites and marketplaces?
Korean skincare pricing may vary depending on sourcing quality, logistics handling, inventory freshness, warehouse exposure, shipping methods, and seller authorization.
Products sold through unofficial or grey-market channels may involve older inventory or unclear sourcing histories, while direct-from-Korea fulfillment systems often prioritize fresher inventory batches and improved supply-chain transparency