numbuzin No.5 Vitamin Concentrated Serum 30ml
numbuzin No.5 Vitamin Concentrated Serum 30ml
What It Is
numbuzin No.5 Vitamin Concentrated Serum is an antioxidant-charged ampoule designed to revive dull, tired skin and visibly improve radiance, tone, and texture.
What It Does
Infused with a potent blend of glutathione, niacinamide, alpha-arbutin, and tranexamic acid, this serum works to fade dark spots, brighten uneven tone, and deeply hydrate. A vitamin complex featuring ascorbic acid and plant-derived extracts like turmeric, mushroom, and sugarcane calms irritation while boosting overall clarity. The silky texture absorbs fast, leaving skin looking energised, smooth, and luminous.
Key Ingredients
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Glutathione – Fades discolouration and enhances radiance
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Niacinamide – Hydrates and balances tone
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Alpha-Arbutin & Tranexamic Acid – Target hyperpigmentation at multiple levels
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Vitamin C Complex (Ascorbic Acid + Derivatives) – Brightens and protects
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Plant Extracts (Turmeric, Mushroom, Sugarcane) – Soothing and antioxidant-rich
Best For
Dull, uneven, or pigmented skin. Great for anyone looking to boost glow and reduce dark spots.
How to Use
After cleansing and toning, apply 3–5 drops and gently press into skin until absorbed. Follow with moisturiser.
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Shipping & Return
Shipping & Return
Once we receive your return, we’ll process your refund within 5-7 business days. Refunds will be credited back to your original payment method. For more details on how to start a return, visit our Returns page or contact our support team—we’re here to help! Shop confidently knowing we’ve got you covered.
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Discover more in our FAQ
How long does it take to process an order?
How long does it take to process an order?
Orders are typically processed within 1-5 business days. We prioritise processing in the order of Platinum, then Express, and then Standard shipping to get your items to you as quickly as possible.
Do you ship internationally?
Do you ship internationally?
Yes! We ship to over 30 countries worldwide. You can find all the details on destinations, rates, and estimated delivery times on our shipping policy page.
What is your return policy?
What is your return policy?
We accept returns within 7 days of delivery, provided the items are unused and in their original condition. For detailed instructions, please refer to our return policy or contact our support team.
Are your products authentic?
Are your products authentic?
Yes, absolutely. We understand that product authenticity is a major concern for K-Beauty shoppers.
Our promise to you is that every single product we stock is 100% authentic. Our team in South Korea works directly with the brands or their official, authorised distributors to source our entire collection.

