No.5+ Glutathione Vitamin Concentrated Serum

Somewhat brightening but sometimes breaks them out if used all over the face.

“Finally the Numbuzin no 5+ serum was somewhat brightening, but sometimes breaks me out if i use it all over my face.”

Two months of the numbuzin No.5 serum after the toner pads makes their skin glow.

“I use the toner pads followed by the Numbuzin 5 vitamin c serum. I have been using these for about 2 months now. It makes my skin glow!”

The numbuzin No.5 serum makes their complexion less dull, especially around the mouth. Their long-term holy grail.

“Numbuzin is super good in making face complexion better, less dull.”

Paired with a niacinamide serum, their skin tone is so even and bright now.

“I use numbuzin's vitamin C serum and pair it with a niacinamide serum from Axis-Y. This combo works absolute wonders on my skin. My skin tone is so even and bright now”

Remembers it working pretty well for their acne marks a year or two ago.

“I tried the numbuzin no 5 serum around a year or two ago and I remember it working pretty well”

Gentle and slightly moisturising with a noticeable reduction in pigmentation and a subtle glow.

“I have been using Numbuzin No. 5. It is gentle and even slightly moisturising. I have definitely noticed reduction in pigmentation and there's a subtle glow.”

Loves the texture and hydration but it didn't really improve their dark spots.

“numbuzin n5 serum: love the texture and hydration, but didn't really improve anything”

The numbuzin No.5 serum, used with the pads, brightened their skin and they liked the texture, but it did nothing for their hyperpigmentation, so they didn't repurchase.

“I had used the serum and toner pads together, I would say that it brightened my skin and I liked the texture”

Since January, the numbuzin No.5 serum with the pads has improved their skin texture and glow and is helping their dark spots.

“I use the toner pads and the serum and it has helped me with my overall skin texture, and glow and it is helping my dark spots.”

The numbuzin No.5 serum cleared all their post-acne hyperpigmentation, and they find it a decent hydrating, brightening serum regardless.

“I used the same numbuzin no.5 and it cleared up every post-pimple hyperpigmentation I had on my face.”

On oily, acne-prone, sensitive skin, two bottles of the numbuzin No.5+ serum were very lightweight and brightening but did nothing for their dark spots.

“very lightweight, honestly bought 2nd bottle cause this worked out well to its claim of brightening”

Two bottles of the numbuzin No.5 serum bought in Korea did nothing for them.

“Same numbuzin did nothing for me after 2 bottles.”

Saw no improvement in their dark spots after emptying two bottles of the numbuzin No.5 serum.

“As for the Numbuzin No.5 serum, I also didn’t see any improvement to my dark spots after emptying two bottles”

Helped some with their stubborn PIH but not completely; serums generally did little.

“The numbuzin glutathione vitamin did help some as did the HQ.”

Uses the serum and toner pads and calls it a holy grail.

“I have been using numbuzin no 5 serum and toner pads and its hg for me”

Using both, they find the numbuzin No.5 serum works much faster on dark spots than AXIS-Y and will keep repurchasing it.

“Numbuzin works much faster and I have seen a bigger difference within a shorter amount of time compared to axis y.”

Two weeks into the numbuzin No.5+ serum on dry, acne-prone skin with deep dark spots, they're liking it so far.

“No.5+ I started using 2 weeks ago. It's very early to state an opinion but I'm liking it so far for my dark spots.”

On dehydrated, clog-prone skin the numbuzin No.5 serum broke them out, so they couldn't use it often, but it brightened their dark spots a lot.

“i have dehydrated and clogged-prone skin and the numbuzin did break me out. however it did brighten my dark spots a lot.”

After months of consistent use, the numbuzin No.5 serum hasn't noticeably changed their dark spots, though it's gentle and hasn't caused acne.

“I've been using Numbuzin consistently since August and haven't seen a significant difference in my dark spots/PIH.”

On combination-dry skin, dark spots faded faster with the numbuzin No.5 serum than with AXIS-Y, which felt more like a moisturizing serum.

“I’ve tried both and personally like Numbuzin better. Dark spots disappeared faster with Numbuzin vs. Axis-Y”

Liked the texture of the UK version but hasn't been wowed.

“otherwise I quite liked the texture of this one but haven’t been wowed”

Found the glutathione serum and a TXA ampoule work much slower for them than vitamin C.

“I've experimented with glutathione (numbuzin 5+ serum) and tranexamic acid (skin1004 brightening ampoule) this year but found they work much slower for me.”

Has always repurchased it for brightening skin tone and improving dullness.

“I have always repurchased this essence. It focuses on glutathione and has the effect of brightening the skin tone. I use it to improve dullness.”

Used with toner pads and boosting toners, it removed roughly 60-65% of their severe sun-damage hyperpigmentation and evened skin tone, with visible change in 3 months and proper results by 6-7.

“The serum helped me remove approximately 60-65% of stubborn pigment and evened out my skin tone!”

Has gone through 6 bottles and enjoys its actives, though they want to move on to a new serum.

“I’ve gone through 6 bottles of Numbuzin 5+ vitamin serum, I do enjoy the actives in it”

After a year it made no difference to one stubborn dark spot on their cheek.

“I currently use Numbuzin Vitamin C serum and beauty of Joseon retinol since a year but no difference to this particular spot!!”

Finds it really good on a lot of levels, though more than just vitamin C.

“The Numbuzin is really good on a lot of levels, I guess.”

With the toner pads it cleared up years of sun damage and tan on their dry-to-normal skin.

“Mine was: Numbuzin 5+ glutathione serum + their toner pads! Cleared up years of sun damage and tan :D”

Since starting the numbuzin No.5 serum they've had small bumps on their forehead, and think it doesn't suit sensitive skin.

“Since I started using Numbuzin No. 5, I’ve had the same kind of issues too.”

Works well for brightening but is slow; it took almost a year for acne-scar PIH to fade.

“Numbuzin works well for brightening but its reallt slow it took me almost a year for my acne scars PIH to fade.”

Their skin reacts to every niacinamide serum, but the numbuzin No.5 serum, started every third day for acne dark spots, doesn't irritate them.

“I was very sceptical, but it’s crazy this serum doesn’t irritate my skin.”

A favorite of theirs for hyperpigmentation, used with the matching toner pads.

“Numbuzin 5+ serum - a favorite of mine for hyperpigmentation”

Has worked well for them and is even better with the vitamin concentrated pads.

“The numbuzin 5+ serum has worked well for me and it's even better when you use the vitamin concentrated pads with the serum.”

Felt a good brightening change from the serum alone, boosted further by the pads twice a week.

“I felt a good brightening change from the serum only and I think it's been cranked up a notch with the pads.”

Feels they see results faster with it than with Round Lab's serum.

“I feel like I'm seeing results faster with the Numbuzin product. However, it's possible that the Round Lab provided a good base for the Numbuzin to perform”

On formerly oily, clog-prone skin, the numbuzin No.5 vitamin serum is amazing and gives a very noticeable glow.

“Numbuzin no.5 VitC is amazing for my skin, gives me a very noticeable glow”

Good at fading fresh acne marks but did nothing for freckles and sun damage.

“Same with the Numbuzin No. 5 serum. Both are good at fading fresh acne marks but don’t seem to do anything for fading freckles and sun damage.”

Used the serum and pads for about 2 months, saw little for acne scars, and would not repurchase.

“but I agree with you, I would not repurchase them for my hyperpigmentation.”

Loves the glow and reduced PIE, but believes its pore-clogging ingredients cause colourless bumps and new pimples on their normal skin.

“i love the serum, it’s made my skin so glowy and has reduced by PIE.”

After 5-6 months of daily use it faded scars a little but gave no massive transformation; unsure they'd repurchase.

“definitely feel like they fade the scars a LITTLE bit, but I did not get a massive transformation with this one.”

The numbuzin No.5 serum alone faded their old acne scars less than the No.5 toner pads did.

“I got the serum and didn’t see as much of a difference when using it alone compared to the toner pads”

It cleared their skin at first but now only breaks them out.

“Numbuzin 5 serum cleared me but now only breaks me out!”

Their skin became very even and bright with it.

“For me it's the Numbuzin 5 serum (my skin became very even and bright)”

Swears by it and says it legitimately helped them so much.

“I will swear up and down by the numbuzin 5 + it legitimately helped me so much”

Used with the matching toner it got rid of their years-old sun tan and dark spots, leaving their face a shade lighter.

“Numbuzin vitamin 5 may have failed for you but it’s gotten rid of my sun tan and dark spots I had from years ago.”

Tried it along with Hada Labo and Melano CC with unsatisfactory results.

“I tried Hada labo blue one,melano CC essence,numbuzin no.5 vitamin concentrate serum with unsatisfactory result sadly”

Works best with the matching toner pads; marks became a bit lighter but they hear tranexamic acid works better.

“I did notice marks becoming a bit lighter with use but I feel that people are reporting better results with tranexamic acid.”

Nice for brightening and dullness but slow on dark spots until adding a TXA serum.

“the numbuzin combo is nice for brightening and making me look less dull but for my spots it was working pretty slow”

Not bad and non-irritating but less evident results than Melano CC; great for beginners and did not cause blackheads.

“Numbuzin was not bad, didn’t irritate at all, that’s true, but it also didn’t give such evident results like Melano.”

Compared with Klairs vitamin C, the numbuzin No.5 serum has a much better consistency, is easy to apply and has little to no smell.

“i use the Numbuzin one now and the consistency is way better, easy to put on, and little to no smell.”

At 57, with lots of sun damage, discoloration and acne, they love the numbuzin No.5+ serum, used alongside the No.3 toner and No.5+ pads. Even their dermatologist commented on the improvement.

“I love the Numbuzin 5+ vitamin concentrate serum”

Meh with not much difference but their skin glows more than with the pads alone; the smell is quite strong.

“meh doesnt have much difference but i can see my skin rn is better (glowing) than wearing pads alone so i give it +1 for that. the smell is quite strong tho (glutathione ofc”

It broke them out with small bumps across their whole face, probably an allergic reaction.

“started using the numbuzin no.5, but sadly it broke me out (small little bumps in my whole face, probably an allergy reaction”

The numbuzin No.5+ serum doesn't irritate them, even alongside tretinoin, unlike Cos de Baha's TXA-niacinamide serum.

“I have also tried Numbuzin No. 5+ concentrated serum and it doesn't irritate my skin.”

Didn't see much at first but later it really helped brighten dark spots, especially new ones.

“I really like it!! honestly i didn’t see much at the beginning but after a while i noticed it really helped brighten dark spots, especially if they were new ones.”

Three months on combination, sensitive skin: the numbuzin No.5 serum has brightened and evened their skin and faded old acne marks. Not sticky or heavy, quick to absorb, no irritation, reasonably priced. A holy grail they'll repurchase.

“I’ve been using this serum for three months now, and I’m really happy with the results.”

A month into the numbuzin No.5 serum they like the texture and see slow progress, with visible results once they added the toner pads.

“I really like the texture, I’ve been using it for 1 month. It’s showing slow progress.”

After only 2–3 uses of the numbuzin No.5+ serum, every other night, they broke out in tiny whitehead-like bumps across their cheeks and jawline.

“I’ve been using the Numbuzin No. 5+ Vitamin Concentrated Serum only 2-3 times”

Their first bottle of the numbuzin No.5+ serum helped their dark spots and brightened their skin, but midway through the second they suspect it caused tiny bumps.

“Hi I’m on the second bottle of Numbuzin no 5+ serum, the first bottle really helped with dark spots”

Stubborn PIH, PIE and redness lightened significantly over 2-3 weeks.

“I loove the numbuzin no 5+ vitamin concentrated serum (different from just no. 5)”

Went from massive scarring to barely wearing BB cream.

“THIS! It’s so amazing. I went from massive scarring to barely wearing bb cream.”

Feels it works but needs time and patience; preferred over COSRX C23 for easier layering.

“I do feel it works, but it requires bit time and patience.”

With combination, acne-prone, sensitive skin, the numbuzin No.5+ serum tingled at first, but after a month of morning use they had no reaction and their mom asked why their skin was glowing.

“I've tried the serum I wasn't sure i was going to like it”

Alternating the numbuzin No.5 concentrated serum with niacinamide, they see visibly brighter skin and faded acne scars.

“i've been using the concentrated serum as well -- i think the difference in my skin is quite visible!”

Impressed with the numbuzin No.5+ serum, used in the morning; they notice a difference in their skin tone.

“I have the 5+ serum, toner pads, and individual sheet mask.”

On combination skin the numbuzin No.5 serum's consistency was too rich and hard to fit into their routine, and the pads broke them out, so they gave both away.

“The toner pads kept breaking me out, the serum’s consistency was too rich”

Needs to repurchase it; used it morning and night after toner and skipped it on retinol days.

“This reminded me that I need to repurchase it, but I used it am and pm after toner/essence. I skipped it on retinol days.”

Great, does what it says with zero irritation when paired with sunscreen.

“Yea it’s great and does what it says. 0 irritation! Just combine with sunscreen”

Went through a few bottles and it faded their acne scars pretty well, though it also breaks them out.

“I went through a few bottles of the no.5 vitamin concentrated serum from numbuzin and it faded my acne scars pretty well.”

Has helped some dark spots and calmed their redness after months of use, and plays well with other skincare.

“It has helped with some dark spots and has calmed my redness. It plays well with my other skincare.”

Cleared their skin after other vitamin C products failed: dark jawline marks gone, clogged pores cleared, though results took about 3 months.

“This serum **cleared** my skin I can't believe it worked. It was the only thing I changed in my regimen! The dark marks along my jawline were gone, clogged pores were cleared, and no active acne.”

After a month there was no real improvement on dark spots and they note it has very little vitamin C.

“I've been using it for a month but haven't seen much improvement on my dark spots, unfortunately. It has very little vitamin C in it”

After a month it is working well to fade their dark marks.

“I've been using it for the past month and it is working well to fade dark marks.”

Likes its serum texture much better than the oily Melano CC.

“i've been liking the numbuzin 5+ serum's texture LOADS better- it's closer to your average serum in viscosity and isn't too thick or thin. so far, it's definitely preferable compared to the melano cc imo!”

Loves it: not sticky or oily, no scent and sinks in immediately; slow progress paired with azelaic and TXA.

“i teied their new #5 vit c serum and i honestly love it!!”

A huge fan: ran out of a second bottle; on sensitive skin it is calming, lightly hydrating and not irritating.

“I’m a huge fan of the no 5 vitamin serum. I ran out of my second bottle recently and nothing else fits into my morning routine as well!”

Feels nice and absorbs quickly but they're not sure it does much; non-irritating.

“I’ve also tried #5 which feels nice and absorbs quickly but I’m not sure it does much for my skin.”

Pretty good with an initial glow, but they didn't repurchase because it didn't improve old pigmentation.

“I’m using their no 5 serum right now. It’s pretty good, though it’s early stages to know if it’s going to do anything to my old pigmentation.”

Recently tried the concentrated serum and feels it works great.

“I’ve recently tried the Numbuzin no 5 concentrated serum and I feel like it works great.”

Has sensitive skin and it doesn't upset it.

“i have sensitive skin also and for me it doesnt upset my skin”

Feels better than Goodal's sticky serum, with good results on hyperpigmentation and hormonal acne alongside a centella ampoule.

“The Numbuzin no 5 dries down less stickier so it feels better on the skin. I like the results so far with the hyperpigmentation and I also helping me keep my monthly hormonal acne more under control.”

Disappointed: finds it more of a niacinamide serum than a vitamin C one, similar to Axis-Y.

“So I have tried the Numbuzin No5 and honestly I’m a bit disappointed.”

Brightened their skin a bit but the fragrance felt like putting lemon Pledge on their face.

“It brightened my skin a bit I just couldn't deal with the fragrance it felt like I was putting lemon pledge on my face”

Works so well for them and makes their skin texture so soft.

“works so well for me!! Highly recommend! make my skin texture so soft.”

After 1-2 weeks they haven't noticed a huge difference in pigmentation but like it, it feels fresh and hasn't broken them out.

“BUT I like it, feels fresh, hasn’t broken me out, and perhaps I just need to use it longer.”

Caused blackheads for the first time in years and their skin improved once they stopped.

“No. 5 caused blackheads for me and I haven’t had blackheads for years :(”