No.5 Glutathione TXA Advanced Dark Spot Ampoule Concentrate — Reddit Reviews
by numbuzin
Updated September 8, 2026
Tranexamic acid and glutathione brighten dullness and fade dark spots quickly.
What the community says
This ampoule targets discoloration with tranexamic acid and antioxidant glutathione. The community often pairs it with tretinoin to address stubborn acne scars but notes it needs sun protection. Some find it less effective if acne remains active or with freckles.
What this means for you
What people love
- Tranexamic acid plus glutathione combo rapidly fades dark spots
- Gentle enough for morning use, an alternative to vitamin C serums
- Fast results in 1-2 weeks reported by some users
Watch out for
- Limited effects if acne or new dark spots persist
- Not effective on freckles or for all users
- Must use sun protection to prevent dark spot relapse
Product details
Concerns
Key Ingredients
Skin type data limited
Where to buy
Real Reddit threads — 17 mentions across 11 threads
numbuzin No.5 Glutathione TXA Advanced Dark Spot Ampoule Concentrate on Reddit, in one place — 11 threads from r/AsianBeauty, r/tretinoin and 2 more, summarized.
“- Numbuzin no. 5”
Positive
“Numbuzin no. 5 and Skin1004 brightening ampoule: These are both gentle alternatives to a vitamin C Serum.”
Positive
“I don't tolerate vitamin C well, but I love these.”
Positive
“Serum: I rotate the following as needed - Numbuzin no. 5”
Positive
“Current maintenance routine”
Positive
“Serum: I rotate the following as needed”
Positive
“you can start with gentler ones like numbuzin glutathione concentrated serum”
Mentioned
“As for acne scars, you can start with gentler ones”
Mentioned
“Don’t pair it with your seoulceuticals serum though.”
Mentioned
“Also numbuzin no 5 glutathione concentrated vitamin serum”
Positive
“The reedle shot ❤️”
Positive
“numbuzin no 5”
Positive
“Same with something like the Numbuzin No. 5 serum for dark spots.”
Cautionary
“It can only do so much if the thing constantly creating new dark spots, which in my case was acne, isn't being addressed first.”
Cautionary
“I tried a lot of the 'holy grails' people swear by, namely products from Numbuzin, COSRX, and Somebymi.”
Cautionary
“I'm going to try these.”
Cautionary
“Numbuzin No. 5 ... isn't working with fading spots and freckles.”
Cautionary
“Numbuzin No. 5 and COSRX Vitamin C 23 isn't working with fading spots and freckles.”
Cautionary
Dupes & Alternatives
Anua
Azelaic Acid Hyaluron Redness Soothing Serum
Better for Hyperpigmentation
3 shared traits
621 mentions