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.

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. 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 a Sebum Control Toner to regulate skin oil production (NUMBUZIN No. 1 blue bottle)STEP 2 (2x day) - USE an Antibacterial Serum to reduce inflammation (Beauty of Joseon Glow Serum w/60% propolis, Tea Tree)STEP 3 (1 to 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 3-4 times a week).I hope these tips are helpful to everyone.

After viewing some information and reviews on this serum, I decided to give it a go. This serum has by far exceeded my expectations in words I cannot describe. I’ve never used anything that has given me such visible results in this short time and I am mad at myself for not taking before and after pictures. I was told that there was nothing that really helped hyperpigmentation, but they were wrong! This serum has visibly reduced my hyperpigmentation in a week and a half, so much that even my preoccupied football fanatic husband said my face didn’t look patchy and brown anymore. (Gee, that’s nice). Of course your mileage may vary, but this has been a completely, unexpected, undeniable change that I would admonish anyone who didn’t at least try this for themselves. Again, you may not get the same results as I did; but I think it’s worth a try

This serum has become a favorite in my morning routine. I’ve been using it with a vitamin C toner and I’ve noticed visible improvement in my skin’s texture and brightness. It layers well with other products and absorbs quickly without any stickiness. The formula is gentle enough for my sensitive skin but still feels effective—especially for fading dark spots and evening out skin tone. A must-have, especially during the summer when hyperpigmentation becomes more noticeable.

This serum feels lightweight and absorbs quickly, and I’ve noticed my complexion looking more even after a few weeks. It’s gentle on my sensitive skin, but a consistent use over a month is needed to see improvement.

Partnered with the toner #5 this is the only Vit C that is having any positive effect on my melasma in quite some time. Very pleased with this product. Just ordered another bottle and I'm not even half way through the current bottle. Glutathione seems to be the magic ingredient for me. Love it

Why did you pick this product vs others?:Love this serum for dark spots and it works amazing . Have purchased multiple bottles . And I also love the brand

This is an amazing serum that was highlighted by two great dermatologistsyou can still use it with your C serum and it does not conflict or changes the efficacy of the c serumYou can also use it after retinol in the eveningsI have not been able to find another serum at this price point as good as this

If you have sensitive skin, I highly recommend doing a test patch first. Sadly, I got an allergic reaction from using this product but my skin is very sensitive though.