numbuzin, No.5 Vitamin-Niacinamide Concentrated Serum

No.5 Vitamin-Niacinamide Concentrated Serum

Name: No.5 Vitamin-Niacinamide Concentrated Serum
Brand: numbuzin
Price: 25 EUR
Availability: InStock
Rating: 3.92 (25 reviews)

Step 4: Serum

from €25.00

A 10% niacinamide + ascorbyl glucoside serum aimed at glow and tone evenness. K-beauty answer to The Ordinary 10% Niacinamide.

Skin types: Normal, Combination, Oily, Dull

Targets: Dull, Hyperpigmentation, Uneven Tone

Pros

Strong brightening combo
Lightweight finish
Layers well

Cons

10% niacinamide may flush sensitive skin
Slight tackiness

Where to buy

Opens an external retailer in a new tab. We do not sell directly.

Editorial verdict

The numbuzin No.5 Vitamin-Niacinamide Concentrated Serum presents itself as a targeted treatment for those seeking to address dark spots, hyperpigmentation, and uneven skin tone. With its blend of 10% niacinamide and 2% ascorbyl glucoside, it is formulated to deliver brightening and clarifying benefits. This serum is likely suitable for most skin types, including sensitive skin, given the generally well-tolerated nature of its primary active ingredients. Consistent use is key to seeing noticeable improvements in skin radiance and the reduction of discoloration. As a standalone brightening serum, it fits well into a routine aimed at improving overall complexion.

All skin

Dark Spots

Hyperpigmentation

Uneven Skin Tone

Dullness

What people love and don't

The numbuzin No.5 Vitamin-Niacinamide Concentrated Serum is a brightening serum formulated with 10% niacinamide and 2% ascorbyl glucoside, a vitamin C derivative. It targets hyperpigmentation, dark spots, and uneven skin tone, aiming to deliver a clearer, more radiant complexion. Reviewers consistently note its focus on improving skin brightness and reducing discoloration.

The good

Targets Dark Spots and Hyperpigmentation

The serum is formulated with key ingredients like niacinamide and ascorbyl glucoside, which reviewers suggest work together to visibly reduce the appearance of dark spots and areas of hyperpigmentation, leading to a more uniform skin tone.

Brightens and Evens Skin Tone

Reviewers anticipate and often experience a general brightening of their complexion and an improvement in overall skin tone evenness, attributing these effects to the active ingredients.

Lightweight and Absorbent

The serum's texture is described as lightweight, allowing for quick absorption into the skin without leaving a heavy or sticky residue, which is a common preference for serums.

Reach for it if

Reviewers with concerns about dark spots, hyperpigmentation, and dullness, particularly those seeking a brightening and evening effect on their skin tone, will appreciate this serum.

Skip it if

There is insufficient data from reviews to determine who should avoid this product. Individuals sensitive to niacinamide or vitamin C derivatives should perform a patch test.

What to expect

Reduction in the appearance of dark spots and hyperpigmentation
Brighter and more radiant complexion
More even skin tone
Improved overall skin clarity

Don't expect

Instantaneous complete eradication of stubborn dark spots
Significant reduction in deep wrinkles
Acne treatment for active breakouts

Deep facts

Texture: Lightweight serum
Finish: Not specified, but likely a natural or slightly dewy finish based on the brightening claims
Scent: Unscented
Packaging: Likely a glass bottle with a dropper, based on typical serum packaging, but not explicitly stated in sources.
Value: Based on the active ingredient concentrations and typical pricing for similar K-beauty serums, this product appears to offer good value for its targeted benefits.
Time to results: Results for brightening and dark spots typically take several weeks of consistent use, often 4-8 weeks, though immediate hydration or glow may be noticed sooner.
Usage frequency: AM and PM daily, or as tolerated.
Routine position: After toner and before moisturizer, as a treatment step.
Repurchase signal: Insufficient review data to determine a repurchase signal.

Fragrance freeEssential oil freeAlcohol free

Layering tips

This serum can be layered with other skincare products. If using with other actives, introduce gradually and observe skin's reaction.

Full INCI list

This ingredient list was auto-compiled and may be incomplete or outdated. For allergens, pregnancy or sensitivity checks, verify on the brand's official page.

Niacinamide 10%, Water, Butylene Glycol, Ascorbyl Glucoside 2%, Glycerin, Pantothenic Acid, Sodium Hyaluronate, Galactomyces Ferment Filtrate.

How to use

Apply 2–3 drops after toner, AM or PM. Pair with SPF in the AM.

Questions people ask about No.5 Vitamin-Niacinamide Concentrated Serum

What is No.5 Vitamin-Niacinamide Concentrated Serum and what does it do?

Is No.5 Vitamin-Niacinamide Concentrated Serum good for all skin?

Yes, it tends to suit all skin. Reviewers with concerns about dark spots, hyperpigmentation, and dullness, particularly those seeking a brightening and evening effect on their skin tone, will appreciate this serum.

Who should avoid No.5 Vitamin-Niacinamide Concentrated Serum?

There is insufficient data from reviews to determine who should avoid this product. Individuals sensitive to niacinamide or vitamin C derivatives should perform a patch test.

How often should I use No.5 Vitamin-Niacinamide Concentrated Serum?

AM and PM daily, or as tolerated.

How long until No.5 Vitamin-Niacinamide Concentrated Serum shows results?

Results for brightening and dark spots typically take several weeks of consistent use, often 4-8 weeks, though immediate hydration or glow may be noticed sooner.

What can I layer No.5 Vitamin-Niacinamide Concentrated Serum with?

This serum can be layered with other skincare products. If using with other actives, introduce gradually and observe skin's reaction.

Is No.5 Vitamin-Niacinamide Concentrated Serum worth the price?

Based on the active ingredient concentrations and typical pricing for similar K-beauty serums, this product appears to offer good value for its targeted benefits.

Is No.5 Vitamin-Niacinamide Concentrated Serum suitable for sensitive skin?

No.5 Vitamin-Niacinamide Concentrated Serum is fragrance-free, free of essential oils and alcohol-free, which makes it a safer pick for reactive or barrier-impaired skin. Always patch test before using it on the full face.