numbuzin No.5 Vitamin Concentrated Serum, Dark Spot Care, Glutathione & Vitamin Serum, Korean Skincare, Tranexamic Acid 4%, Niacinamide 5%, for a Radiant-Looking Glow 1.01 fl oz

It is Good, it visibly improves the look of dark spots, hyperpigmentation, and uneven skin tone. I like it Very Much. I have used it carefully, slowly, and it has helped my skin improve and look good over time. The Skincare item does even out skin tone well and boosts some natural radiance in the skin. It offers some hydration. I like how it enhances skin texture, and effectively diminishes the appearance of some dark spots and discoloration. It is gentle and has Helped and Improved My Skin and Face Very Much. I like how it improves the look of face skin for a fresher, more better good looking appearance. It helps to improve the appearance of skin. It does well with to visibly reduce the look of dark spots and post-acne marks. It is pleasant, decent, satisfying, nice and effective. I would Recommend this Skin item.

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.

’ve been using the numbuzin No.5 Vitamin Concentrated Serum every single day, and it has truly become a staple in my skincare routine. As someone with acne-prone skin, I’m always cautious with vitamin serums because many can feel heavy or trigger breakouts. This one has worked beautifully for me. The formula is lightweight, absorbs quickly, and doesn’t leave any sticky or greasy feeling. It layers well under moisturizer and sunscreen without pilling. Over time, I’ve noticed gradual improvement in dullness and post-acne marks. My skin looks brighter and more even, but still feels calm and balanced — not irritated or overwhelmed. Pros: * Lightweight and fast-absorbing * Gentle on acne-prone/sensitive skin * Helps with dullness and post-acne marks * Suitable for daily use Cons: *The quantity feels a bit less for the price, especially if you use it daily Overall, it’s a gentle yet effective vitamin serum that works well for everyday use. I just wish it came in a slightly larger bottle!

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 use Contains glutathione and vitamin ingredients that are great for skin Good texture, leaves skin soft and moisturized The slight stickiness dissipates after absorption Cons: Slight stickiness that requires a bit of waiting for full absorption No dramatic changes, but subtle improvements with continued use Overall, 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!

Great HG item. It covers my need for a light concentration of vitamin C, along with TXA and glutathione. After researching the ingredients, it was nice to find this combination without a lot of the skin-aggravating ingredients found in many common or viral products. It definitely helps add to my skin glow. I can't say it helps much with hydration, but I use a Centella ampoule afterward, and that seems to work very well with this. I also haven't noticed any scent, and I'm glad there are no added fragrances. Simple and effective, and I’m very happy with the results. I can't remember the last time I had hyperpigmentation stick around for long with this in my routine.

It smells... AWFUL! Like rotten eggs. Prepare your spouse for how bad it will smell. But it works GREAT. Had my skin much clearer and GLOWING! A few stubborn spots that I had a hard time with removing has lightened drastically.

Really nice serum. I have been impressed with numbuzin products. I have purchased several of them and have liked everyone. I like that they do exactly what they say they're going to do. All the serums that I have tried from this company are lightweight and you only need a tiny bit. The price is about mid-range. I will be repurchasing this.

I had a really dark circle in the middle of my forehead that I’ve even had lasered to get rid of the hyper pigmentation but that seemed to make it worse so I’ve been using this twice a day now for about a month on top of my daily/nightly skin regimen, serums, aha’s, bha’s, toners, moisturizers, retinols, you name it. Granted i am using a lot of product, adding this last to finish it off i can see a big difference. I was starting to see it fade prior to this but once i added this in my routine, the dark circle is basically gone. I can still tell where it is when ever i take selfies or am in a photo sometimes but everyone else says they don’t notice it until i point it out. I really think by the time i finish this bottle my skin will be clear. It does have a bad smell but you’re not covering your entire face in it just the spot. It’s not unbearable unless you’re just holding it under your nose for whatever reason plus what ever other product you’re using will cover it. I’ll take bad smell but it works any day.

Je crois que c'est au moins mon 3 ème flacon. J'en suis très satisfaite. J'ai remarqué que mes pores son plus petits donc beaucoup moins visible qu'avant et j'ai remarqué une peau plus éclatante qu'auparavant. Sachant que j'ai une peau avec des pors dilatés qui m'ont beaucoup complexés. J'ai aussi remarqué que ça m'a raffermi la peau (effet liftant).

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i have used a number of vitamin c serums and i just havent been able to get on with any so far. L-ascorbic acid can be very aggravating to many people, causing sensitive skin that can flake and peel before getting used to the active ingredients. the way numbuzin has formulated this No.5 serum is incredible. It still has a slight hot dog water smell (if you know you know!) but its very mild, but it feels amazing on the skin. its left looking glowy but not artificially so, and i have seen a definite improvement to my skins texture and radiance. Best of all, there has been absolutely zero irritation. Amazing product and one that i will buy forever i expect!

It doesn't have any effect. It's just a waste of money. Also, the customer service is terrible. Although they promised a return, as advertised, the seller refused to process the return. Overall rating is 0, if that were an option. I do not recommend it. You can buy much better products from well-known brands for the same price.

Al aplicarlo de noche , al día siguiente se siente muy bien la piel, si me gustó , y n cuánto a las manchas aún no veo cambios notables pero siento que con el uso constante si puede funcionar.