numbuzin No.5+ Glutathione Vitamin Concentrated Serum
By Nur → Last verified 9/12/2026
Price checked 9/12/2026
Affiliate links: we may earn a commission at no extra cost to you.
What we found
Based on how this product compares to others in the serums category, cross-referenced against retailer listings and market data.
Strengths
- + Strong social-media-driven popularity, particularly for the "glass skin" aesthetic
- + Real formula confirmed with niacinamide, tranexamic acid, and arbutin together, three real brightening actives, not just a vague "vitamin C complex" label
- + Contains ceramide NP and bisabolol alongside the brightening actives, adding barrier support to a brightening serum
Worth knowing
- - Vitamin C complex (not pure ascorbic acid), gentler but generally slower-acting than high-percent pure forms
Key ingredients
These are the ingredients numbuzin highlights for this product, cross-checked against general dermatological and cosmetic-chemistry sources, not a full INCI list.
Fragrance: confirmed fragrance-free.
| Ingredient | What it is | What it does for skin |
|---|---|---|
| Niacinamide (5%) | Vitamin B3 at a concentration within the most clinically studied range. | Supports the skin barrier and has published evidence for visibly reducing hyperpigmentation at this dose. |
| Panthenol | Pro-vitamin B5, which converts to pantothenic acid once absorbed into skin. | Hydrates as a humectant, supports wound healing, and has anti-inflammatory, soothing effects on irritated skin. |
| Tranexamic acid (4%) | A brightening ingredient originally used in medicine to reduce bleeding, now studied for pigmentation. | Targets dark spots and hyperpigmentation by interrupting the pigment-production pathway; considered gentler than exfoliating acids. |
| Arbutin | A brightening compound derived from plants like bearberry. | Inhibits the enzyme that triggers pigment production, gradually helping fade dark spots; works more slowly than stronger brighteners, generally with less irritation. |
| 3-O-Ethyl Ascorbic Acid (stable vitamin C) | A more stable, gentler derivative of vitamin C. | Converts to active vitamin C once in the skin; brightens and fights free radicals with less irritation risk than pure ascorbic acid. |
| Ceramide NP | One specific, well-studied type of ceramide used in skincare formulas. | Reinforces the skin barrier and helps it retain moisture, the same core ceramide function. |
| Bisabolol | A calming compound most commonly sourced from chamomile, though it can also be produced synthetically; an ingredient list alone doesn't confirm which source a specific product uses. | A well-documented soothing ingredient that helps calm irritation and redness, gentle enough for sensitive skin. |
| Glutathione | An antioxidant naturally produced by the body, also used topically in some brightening formulas. | Helps neutralize free radicals and is marketed for brightening, though topical absorption and efficacy are less established than oral or injectable use. |
What the brand says
numbuzin's own marketing claims, not our own findings.
- Marketed for overall brightening and \"glass skin\" glow
- Lightweight, fast-absorbing texture
Research-Based
Our assessment comes from pricing, ingredients, and published information, not personal use, the same standard we apply across the site. This product hasn't been hands-on tested yet. See our Methodology for what that distinction means.
Price history
The lowest price per mL we've recorded for this product is $0.50, below its current $0.83.
Cheaper alternatives in serums
More serums you may like
Frequently asked
How much does numbuzin No.5+ Glutathione Vitamin Concentrated Serum cost per mL?
$0.83 per mL (currently $25.00 for 30 mL).
Has numbuzin No.5+ Glutathione Vitamin Concentrated Serum been hands-on tested?
Not yet. Our assessment for this product comes from pricing, ingredients, and published information, not personal use, the same standard we apply across the site. See our Methodology for what that distinction means.
What are the key ingredients in numbuzin No.5+ Glutathione Vitamin Concentrated Serum?
The ingredients numbuzin highlights for this product include Niacinamide (5%), Panthenol, Tranexamic acid (4%), Arbutin, 3-O-Ethyl Ascorbic Acid (stable vitamin C), Ceramide NP, Bisabolol, Glutathione.
Sources
Pricing and availability for this product were verified against the following retailer listings.