numbuzinNo.5 Serum | Tranexamic Acid 4%, Niacinamide 5%, Glutathione, Vitamin C | Vitamin Concentrated Serum | Hyperpigmentation| Suitable for Sensitive Skin, Korean Skincare | 1.01 fl. oz.

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

I’m usually skeptical about facial products since I rarely notice a difference, but after using this for several weeks/months, I actually saw a reduction in redness and scarring. It has a slightly sticky texture, but once it dries, it’s fine—I just make sure to wash my hands afterward since it’s not like a regular lotion. A bottle lasts me about a month with once-daily use (morning), though it's recommended for both morning and night. This has become a staple in my routine, and I now order it regularly. Highly recommend!

So this is my 3rd or 4th bottle. Works well, definitely brightens and very gentle. 1 bottle lasts quite a while. Oh and it smells nice 😊 Absorbs well. Comes in 30 ml bottle. I actually wash the bottles to recycle the use since i can stick other liquids in there to make it travel friendly.

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!

Have only used a few times. Too soon for a complete review, but like how it soaks in, so far. No irritation noticed.

This is wonderful my face gets all vitimas spots wrinkles,lines i do it 2 times a day

I used this product mainly in the morning. It leaves skin soft and hydrated all day long! I feel like my skin tone got brighter too. It’s a great product for the price!

The numbuzin No.5+ Vitamin Concentrated Serum is a mixed bag. While the serum absorbs quickly and has a pleasant texture, I haven't noticed any significant improvement in my dark spots after consistent use. It does leave my skin feeling hydrated and slightly brighter, but the promised brightening effect is underwhelming. Additionally, the bottle is quite small for the price point. Overall, it's a decent product but doesn't live up to the hype.