numbuzin No.5 Serum | Tranexamic Acid 4%, Niacinamide 5%, Glutathione, Vitamin C | Vitamin Concentrated Serum | Hyperpigmentation| Suitable for Sensitive Skin, Korean Skincare | 1.01 fl. oz. | ⭐ Flexiology.Store Recommended
Original price was: $26.00.$15.99Current price is: $15.99.
🌿 Expert Tip: Handpicked for natural health, wellness & beauty.
Price: $26.00 - $15.99
(as of Oct 09, 2025 03:33:12 UTC – Details)
From the brand
No.9 Line for Sagging Skin
No.5 Line for Dark Spots
No.3 Line for Pores
No.1 Line for Acne Care
No.2 Line for Plumping
Product Dimensions : 3.94 x 1.97 x 0.79 inches; 3.53 ounces
Item model number : NBZ-024
UPC : 691266759780
Manufacturer : BENOW Inc.
ASIN : B0C61FD7P9
Best Sellers Rank: #1,286 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #60 in Facial Serums
Customer Reviews: 4.5 4.5 out of 5 stars 3,909 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
[DARK SPOTS SERUM] Daily serum enriched with tone-evening ingredients, glutathione and vitamin C, and antioxidants, to gently yet effectively fade dark spots and hyperpigmentation, leaving you with glowing, clear skin.
[GLUTATHIONE] Glutathione is a well-known supplement especially in Korea, to improve dull, uneven skin tone and to fade hyperpigmentation, dark spots, and acne marks. This powerful antioxidant inhibits melanin overproduction and accumulation, which are the leading causes of hyperpigmentation. Glutathione-enriched skincare offers a gentler and more effective alternative to supplements.
[KEY INGREDIENTS] Contains antioxidants and tone-evening ingredients glutathione, vitamin C, niacinamide and tranexamic acid to help gently yet effectively fade hyperpigmentation and darks spots and even out dull, uneven skin tone. Panthenol and ceramides for soothing and hydration.
[CLINICALLY TESTED] Clinically proven to even out skin tone by 18.90% and reduce dark spots by 9.65% in 4 weeks. Hypoallergenic and skin irritation tests completed, making it safe to use for sensitive and acne-prone skin types.
[RECOMMENDED FOR] All skin types: oily, dry, combination, acne-prone, and sensitive skin. Especially recommended for the following skin concerns: hyperpigmentation, dark spots, acne scars and marks, dull and tired complexion.
Customers say
Customers find the serum effective at brightening skin and fading dark spots, while delivering results without compromising skin barrier health. Moreover, the product is gentle on sensitive skin, hydrating, and leaves a soft, supple texture. Additionally, it absorbs quickly without feeling sticky. However, some customers report breakouts as a side effect.
🌿 Expert Tip: Selected by our Flexiology Experts for quality & value.
⚠️ Disclaimer: Information is for educational purposes and not a substitute for medical advice. Consult your physician before use. Flexiology.Store is not responsible for any adverse effects.
9 reviews for numbuzin No.5 Serum | Tranexamic Acid 4%, Niacinamide 5%, Glutathione, Vitamin C | Vitamin Concentrated Serum | Hyperpigmentation| Suitable for Sensitive Skin, Korean Skincare | 1.01 fl. oz.
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Sherl –
Right Ingredients, Gentle but SLOW FADING over 3+ months
3-MONTH RESULTS (2x day):Slight fading of deep dark acne scars and age spots. Evens out skin tone. Gentle and not irritating. I am guessing this will take 6 to 9 months for deeper scars to fade. The pamphlet on Yesstyle.com shows 9.65% improvement in Blemishes after 4 weeks and 18.9% for even skin tone (this means expect slow steady results). They recommend also using the toner pad for faster results (165% improvement) but the combo irritated my skin. Overall, I like that it is gentle and will continue using it, right after the Toner.KEY INGREDIENTS:Contains the right chemicals known to fade dark spots like Glutathione, 4% Tranexamic Acid, 5% Niacinamide (both suppresses melanin), Alpha-Arbutin, Vit C, 3-0-Ethyl Ascorbic Acid, Tumeric etc.TEXTURE:Light serum, not sticky, absorbs quickly after Toner. Tap face gently for a few seconds after applying to help the skin absorb quicker before adding the next product (tip from korean skincare companies that works).ACNE PREVENTION TIPS: Best way to see improvement of skin is to keep the pores clear and acne from re-surfacing. I have not had a single breakout in 3 months using this routine. Also changed my skin type from Oily Combo to Normal.STEP 1 (2x day) – Use SEBUM CONTROL TONER to regulate skin oil production (I use NUMBUZIN No. 1 blue bottle)STEP 2 (2x day) – Use ANTIBACTERIAL SERUM to reduce inflammation (I use Beauty of Joseon Glow Serum w/60% propolis, Tea Tree)STEP 3 (2x week) – EXFOLIATE to keep pores clear, as clogged pores breed acne. I use Beauty of Joseon Ground Rice and Honey mud mask. Leave on face and neck for 15 minutes; this is a very gentle product. STEP 4 (Optional) – EAT food that aide the digestive system and help prevent acne like Yogurt, Kimchi and Sauerkraut (eat small amounts 2-3 times a week).I hope these tips are helpful to everyone.
John –
Very gentle brightening serum with modest results
I have sensitive, dry skin that is prone to hyperpigmentation from the sun. I’ve been using this serum for about two months now so I feel confident discussing what it can (and can’t) do for my skin. The serum is very hydrating and gentle, and I was surprised to find it NEVER irritated my skin – even when my skin barrier was compromised and I was dealing with irritation from another product. That alone is enough for me to be impressed! It’s also got a very rich, gorgeous texture. I’d say it’s on the thicker side, and has a lot of glide to it as you apply it across your face. I find it to be hydrating and moisturizing, but because it’s so rich it does take a second for it to sink in. I usually wait about 30 seconds before it dries down completely. Something I also appreciate is how dewy it makes my skin.Over the past two months I’ve noticed some modest but definite brightening from the serum. My dark spots have faded a bit and my skin is more plump and smooth. I notice less redness and irritation around my nose as well. But you shouldn’t expect this to work miracles – this serum seems to work best as a gentle, progressive brightener rather than an intense active. It’s perfect for someone like me who wants to benefits of a brighter skin tone without the irritation of harsher actives.This is very easy to integrate into almost any skincare routine, but here is a breakdown of who I think this serum is good for based on my own personal experience with it:This is for you if:-If you deal with hyperpigmentation from the sun or post-acne marks-If you want a brighter complexion but don’t want to use harsh actives-If you use other more intense actives (AHAs, Retinol, etc.) and you want a little “boost”-If you have dry and dehydrated skin and need a serum that will help hydrate and moisturizeThis is NOT for you if:-You expect this to make a drastic difference in your dark spots-You have very oil or acne prone skin-You are looking for a vitamin C serum
cj –
Best morning serum for hyperpigmentation
This is the best vitamin C serum out there. I also love that it has tranexamic acid and alpha albutrin, and glutathione! It’s pretty gentle on my skin and is great at fading hyperpigmentation. I use it every morning and will definitely be repurchasing.
L.Cho –
Subtle Yet Effective
I’m almost done with the bottle, so I wanted to leave a review. I’ve tried several products from Numbuzin, and while their popular toner didn’t work for me (unfortunately), I decided to give this serum a try despite my initial doubts—and I’m pretty satisfied with it!This serum contains glutathione and vitamin ingredients, which are known for their brightening and skin-tone-evening effects. While it’s not a dramatic change, after using it consistently, I’ve noticed that my complexion looks a bit brighter and more even. It’s not a miracle worker, but it definitely helps to improve skin tone over time.The texture is nice and smooth, but it does feel slightly sticky when first applied. Because of this, I usually wait a little while for it to fully absorb. Once it’s absorbed, the stickiness goes away, and my skin feels soft and moisturized. It’s not a dealbreaker for me, but it’s something to keep in mind if you’re in a hurry.Pros:Noticeable brightening and evening of skin tone with consistent useContains glutathione and vitamin ingredients that are great for skinGood texture, leaves skin soft and moisturizedThe slight stickiness dissipates after absorptionCons:Slight stickiness that requires a bit of waiting for full absorptionNo dramatic changes, but subtle improvements with continued useOverall, I’m pleasantly surprised by the Numbuzin No.5+ Vitamin Concentrated Serum. It’s gentle on the skin, and with consistent use, I’ve seen a gradual improvement in my complexion. If you’re looking for a product with glutathione and vitamin ingredients, this is definitely worth trying!
Sandip Basu Mallik –
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Solange –
Au bout de 3 mois à l’utiliser tous les matins et en pensant à mettre ma crème solaire après, j’ai vu un éclaircissement significatif de mes tâches profondes que j’ai depuis plusieurs années. Fonctionne aussi très bien sur les tâches post-acné.
Amazon Customer –
Excellent work for me make my skin glow
Amazon カスタマー –
使い心地も、保湿力もすごくいいです。
Helene –
Ich bin zufrieden vertrage es gut und meine Pigmentflecken im Gesicht werden zumindest nicht dunkler. Mit der Pippette lässt sich alles gut dosieren und zieht gut in die Haut ein.