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No.5 Vitamin Concentrated Serum

HyperpigmentationSerum

No.5 Vitamin Concentrated Serum — Reddit Reviews

by numbuzin

82nextscore56 verdicts

Updated September 2, 2026

Tranexamic acid and niacinamide fade dark spots and hyperpigmentation well; purging risk exists.
$6.50at Stylevana
See 34 dupes

What the community says

This serum blends tranexamic acid, niacinamide, and vitamin C to brighten and target dark spots. It suits those aiming to fade pigmentation without harsh irritants but can cause breakouts, especially for acne-prone skin. Fragile, oily, or sensitive skin types should patch test first.

What this means for you

From Reddit

Backed by 28 threads from r/koreanskincare, r/AsianBeauty and 2 more.

Read the threads ↓

What people love

  • Clinically effective tranexamic acid and niacinamide concentrations for pigmentation
  • Gentle enough for sensitive skin and during tret use
  • Non-stinging formula praised for improving dark spots and hyperpigmentation

Watch out for

  • Can trigger breakouts and cystic acne in acne-prone users
  • Some find it heavy or irritating during initial use
  • Not a strong standalone vitamin C serum; mild in concentration

Product details

Brandnumbuzin

Use caution

Concerns

Skin Type

Product Traits

Key Ingredients

Where to buy

Real Reddit threads — 95 mentions across 28 threads

numbuzin No.5 Vitamin Concentrated Serum on Reddit, in one place — 28 threads from r/koreanskincare, r/AsianBeauty and 2 more, summarized.

r/koreanskincareWent to Seoul and did a little haul
K-Beauty
646

“The Numbuzin No5 serum is incredible! Great haul!”

Mentioned

“Love the haul 😍”

Mentioned

“Yes I totally love Skin1004 and their store in Seoul is so pretty.”

Mentioned
r/AsianBeautypersonal + gifting friends & family haul [skin/body/hair/care]
Vitamin CK-Beauty
598

“Numbuzin No.5+ Glutathione Vitamin Concentrated Serum”

Mentioned

“Serums/Creams:”

Mentioned

“Here is the list of items. I've arranged them into categories.”

Mentioned
r/koreanskincareHonest and *long* review : vitamin c and eye cream
HyperpigmentationK-Beauty
387

“I have faint acne hyperpigmentation left which is fading by numbuzin no 5 serum and toner pad.”

Mentioned

“numbuzin no 5 serum”

Mentioned
r/koreanskincareForget trends - what Korean skincare products have truly earned a permanent spot in your routine
K-Beauty
327

“numbuzin 5+ serum”

Positive

“Holy grails: acwell licorice toner, haru haru black rice toner, numbuzin 5+ serum”

Positive

“numbuzin 5+ serum and the numbuzin nad+ 9 serum”

Positive
r/koreanskincareWhat’s a k-beauty product you repurchased more than 3 times?
Vitamin CK-Beauty
302

“Numbuzin no5 serum”

Positive

“and Numbuzin no 5 vit c serum ofcourse I'm on my 6th bottle right now”

Positive

“Numbuzin No 5 serum”

Positive
r/koreanskincare12 months (skincare only)
K-Beauty
296

“Added later on: Numbuzin no5 brightening serum (replaced axis-y and vit c)”

Positive

“Numbuzin no5 brightening serum (replaced axis-y and vit c)”

Positive

“I did get these result with this routine.”

Positive

Dupes & Alternatives

Compare all 34 alternatives

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