numbuzin - No.5 Glutathione Vitamin Concentrated Serum 30ml

numbuzin No.5 Glutathione Vitamin Concentrated Serum (30ml) is a lightweight Korean dark spot serum made in South Korea by numbuzin, the brand known for its numbered skin-concern lines. It combines tranexamic acid 4% and niacinamide 5% with glutathione, vitamin C derivatives and panthenol to help fade the look of dark spots, post-acne marks and uneven tone. It suits all skin types, including oily and sensitive skin, and is used morning and night. numbuzin No.5 Glutathione Vitamin Concentrated Serum is available in Kuwait from Skin Valet at 7.950 KWD.

Skin Valet Kuwait is an authorized stockist of numbuzin. Every bottle is sourced through official distributors, never grey-market or refilled stock, so you receive the original formula exactly as numbuzin produces it in Korea, sealed and fully labelled.

What numbuzin No.5 Serum Does

No.5 is numbuzin's line for dark spots, and this concentrated serum is its core step. It brings several popular brightening ingredients together in one fluid, so a single layer covers tone, marks and radiance.

• Tranexamic acid 4% – helps reduce the look of stubborn discoloration and uneven patches.
• Niacinamide 5% – helps even out skin tone, refine the look of pores and support moisture retention.
• Glutathione and vitamin C – antioxidants that help skin look clearer and more radiant.
• Panthenol and ceramide NP – soothe and support the skin barrier, so the formula feels comfortable with daily use.
• Alpha-arbutin – a gentle tone-evening ingredient that works alongside the other brighteners.

The formula is alcohol-free and oil-free, with a fluid texture that absorbs quickly and layers well under moisturizer and sunscreen.

Multi-Ingredient Serum vs a Single Vitamin C Serum

Unlike a typical pure vitamin C serum, which relies on one high-strength active and can sting or oxidise quickly, this serum spreads the work across several ingredients at moderate levels: tranexamic acid, niacinamide, glutathione, stable vitamin C derivatives and arbutin. That makes it easier to use every day, including on sensitive skin, and a good first dark spot serum if strong acids or L-ascorbic acid have irritated you before.

It is designed to be the treatment step of the No.5 range. If you want a broader view of options, see our dark spot and hyperpigmentation collection.

Why It Works for Skin in Kuwait

Pigmentation is one of the most common concerns in Kuwait, and the climate is a big reason. Strong UV for most of the year darkens existing marks and keeps new ones appearing, even on short daily drives.

Summer heat above 45°C and coastal humidity make heavy creams feel unpleasant, while long hours in air-conditioning leave skin dehydrated and dull. A light, fast-absorbing serum like No.5 fits this reality: it targets uneven tone without adding weight, and the panthenol and ceramide keep AC-dried skin comfortable. The one rule that matters most here is daily sunscreen; without it, no brightening serum can keep up with the sun.

How to Use numbuzin No.5 Glutathione Vitamin Serum

1. Cleanse your face and apply toner.
2. Dispense two to three drops into your palm or onto your face.
3. Spread the serum evenly over the face, avoiding the eye area.
4. Pat gently and add an extra thin layer on dark spots if needed.
5. Follow with moisturizer, and finish with sunscreen in the morning.

Use it in the morning and evening, after toner and before moisturizer. In the morning, always finish with SPF, such as the Round Lab Birch Juice Moisturizing Sunscreen SPF45. If you also use retinoids or exfoliating acids, introduce them on alternate nights at first. Patch test before first use if your skin reacts easily, as the formula contains several plant extracts and actives.

Key Ingredients and Who It Suits – المكونات الرئيسية

Hero ingredients: tranexamic acid, niacinamide, glutathione, panthenol, alpha-arbutin, 3-O-ethyl ascorbic acid and ascorbyl glucoside, ceramide NP, tocopherol and lingonberry fruit extract.

Best for: dark spots, post-acne marks, sun spots, dullness and uneven tone on normal, oily, combination and sensitive skin.

Less ideal for: anyone expecting overnight results. Tone-evening ingredients need several weeks of steady use and daily sun protection. Explore the full numbuzin collection in Kuwait or our brightening and glow picks.

Frequently Asked Questions

Is numbuzin No.5 serum good for acne scars?

It is designed for the flat brown or red marks that acne leaves behind, which many people call acne scars. Tranexamic acid, niacinamide and glutathione help those marks look lighter over time. It does not change the texture of raised or pitted scars, which need a dermatologist.

Can I use numbuzin No.5 serum every day?

Yes. numbuzin designed it for both morning and night use, and the formula is alcohol-free and oil-free. Start once a day for the first week if your skin is sensitive, then move to twice daily, and wear sunscreen every morning.

Where can I buy numbuzin No.5 Glutathione Vitamin Concentrated Serum in Kuwait?

Skin Valet Kuwait (skinvaletkw.com) is an authorized stockist, and every unit is sourced through official distributors. We deliver to all six governorates of Kuwait, Saturday to Thursday: express delivery in 3–4 hours for orders placed before 6 PM (3 KWD), or standard delivery within 24 hours (1 KWD, free on orders over 25 KWD). Pay with KNET, Visa, Mastercard, Apple Pay or cash on delivery. Unused items in their original condition can be returned within 14 days. Need help choosing? WhatsApp our team on +965 9725 4797.