No. 86
in skincare
Buy on Amazon
Check current price
Shop at StylevanaSearch this retailer
Shop at StylevanaSearch this retailer
Confirm the exact version, seller, current price and stock before ordering. Catalog prices and availability are historical snapshots, not live offers.
● Affiliate link.
We may earn a commission on qualifying purchases through our links — editorial choices and discussion summaries are independent of commission rates.
How it works.
61% would recommend
Why we ranked it No. 86 in skincare
Sample
53 redditors with explicit opinion · 8 positive · 5 negative · 0 neutral
Score0.615 — formula: 0.75 × % positive + 0.25 × pos/neg ratio
Confidence95% CI: 36–82% · the true approval rate falls in this range with 95% statistical confidence
Verdict
Recommended — ≥50% positive. Mixed but more good than bad.
Sources
r/koreanskincare, r/KoreanBeauty, r/AsianBeauty, r/tretinoin
numbuzin · skincare
Recommended
No.5 Vitamin Niacinamide Concentrated Serum
r/koreanskincarer/KoreanBeautyr/AsianBeautyr/tretinoin
TL;DR — Reddit consensus
Brightening serum (TXA 4% + niacinamide 5% + glutathione) with real dark-spot wins on Reddit — and a visible minority reporting purging or no effect.
Amazon vs Reddit
Amazon loves it. Reddit isn't sold.
On Amazon: ★4.5 from 5,173 reviews — that's roughly 88% positive.
On Reddit: 61% of 53 redditors recommend it.
The gap of 26 points is unusual and worth reading the cons before you buy.
What redditors love
+
Dark spots and post-acne marks fade with consistency
“numbuzin no.5 glutathione txa advanced dark spot ampoule concentrate, and their no.5 glutathione vitamin concentrated serum. i'm a toner freak, and i love their no.3, n”
u/Jhero61 · r/koreanskincare →
+
Plays well under sunscreen
“skin the glow! it’s very soothing even when my barrier was broken, this didn't break me out at all. i highly recommend using this with the vt reedle shot. 5. **numbuzin no.5 vitamin concentrated serum** : i got this to brighten my post-acne marks and it didn't break out my sensitive skin at all. i u”
u/Real_City3177 · r/AsianBeauty →
What they don’t
−
A loud minority saw purging or zero change
“ry prone to closed comedones and fungal acne, so i need serums that won’t cause more breakouts. the products i have tried in the past for hyperpigmentation: 1. numbuzin no. 5 toner pads – they brightened my skin a little and slightly helped with dark spots, but they didn’t help with the hyperpigment”
u/Proof-Particular-915 · r/KoreanBeauty →
−
Slow — weeks before visible difference
“ry prone to closed comedones and fungal acne, so i need serums that won’t cause more breakouts. the products i have tried in the past for hyperpigmentation: 1. numbuzin no. 5 toner pads – they brightened my skin a little and slightly helped with dark spots, but they didn’t help with the hyperpigment”
u/Proof-Particular-915 · r/KoreanBeauty →
MORE PRODUCT REVIEWS
Catalog suggestions may serve different purposes. Check each product’s role and limits.
Explore another review
The
Ordinary Niacinamide
→
Explore another review
Beauty of Joseon
Beauty of Joseon eye serum
→
Direct quotes
Archived Reddit excerpts.
Selected comments are individual experiences, not a representative poll. Follow the links for the original context.
R
u/Real_City3177
·
r/AsianBeauty
skin the glow! it’s very soothing even when my barrier was broken, this didn't break me out at all. i highly recommend using this with the vt reedle shot. 5. **numbuzin no.5 vitamin concentrated serum** : i got this to brighten my post-acne marks and it didn't break out my sensitive skin at all. i use it 2-3 times a we
Y
u/yabasicjanet
·
es (i'm on box 3). calming and hydrating and while not like a hg acne product, i do feel that my breakouts have been really reduced in amount and severity. the numbuzin no 5 pads are also stealing my heart. there's a jelly side and a textured side, and have a bit of pha and lha along with a bunch of nice brightening in
R
u/randomacquaintance
·
r/KoreanBeauty
i’m surprised you said that about biodance, those masks are my hg to glass skin. i use one every sunday. 💕 eta: the numbuzin no 5 didn’t do a lot for me and i chose not to rebuy. it is definitely very gentle and i wanted to love it but it just didn’t seem to change anything
C
u/Crazy_Sundae_6995
·
r/KoreanBeauty
numbuzin no. 5 gluta vitamin serum is my hg!!!! i’ve repurchased many times and recently bought 3 of their 2-pack to stock up. i’m medium/tan and always get hyperpigmen
J
u/Jhero61
·
r/koreanskincare
numbuzin no.5 glutathione txa advanced dark spot ampoule concentrate, and their no.5 glutathione vitamin concentrated serum. i'm a toner freak, and i love their no.3, n
C
u/cuddleisha
·
r/koreanskincare
wow i love this comprehensive message, i will definitely check out different toners and serum. i recently just bought the numbuzin no.5 vitamin serum which comes in tomorrow, do you think i maybe try this serum out and have a break from anua? thank you again for your well thought out messa
Discussion sources
Linked Reddit conversations.
●
r/AsianBeauty
r/AsianBeauty
●
Toner Pads
●
r/KoreanBeauty
Please Influence Or Deinfluence Me
●
r/KoreanBeauty
Please Influence Or Deinfluence Me
●
r/koreanskincare
Serum Holy Grails
●
r/koreanskincare
My Skincare Routine Makes My Skin Feel So Sticky
●
r/koreanskincare
What Toner Is The Best
●
r/tretinoin
2 Year Transformation
Read also
More guides to explore.
Adjacent
More products to compare.
02
COSRX
Snail Mucin Essence
A lightweight snail-filtrate essence for a separate hydrating step. Archived users describe both comfortable layering and a stringy…
Read full review
03
Aestura
Aestura atobarrier
Atobarrier 365 Cream receives personal praise for spreading and absorbing well, while another user finds the cream and related versions…
Read full review
