COSRX The Niacinamide 15 Face Serum - 20ml - Ulta Beauty

I love that it goes well with the other facial product i use, no negative reaction.

Great product for matire skin. The packaging needs improvement. The suction doesnt get any product out so i have to pour directly from the bottle.

I notice a difference in my acne overnight

I've had smile lines on my left side that just stayed constantly creased for about the past 1.5 years—but now after using my first full bottle of this, they're almost totally gone! I've also been dealing with what seems to be perioral dermatitis (red blotchiness & occasional bumpy breakouts on smile lines & under nose; still in the process of figuring this out with my dermatologist)—& this is almost entirely gone too! I've tried so many different products, including prescriptions, and this is the first thing that has actually done the trick for both issues. Both issues do seem to resurface slightly if stop using this one for a few days, but never look as severe as before.

The serum itself is nice, didnt irritate my skin (i have sensitive skin). But the packaging is horrible. First, its quite small for what we pay for. Second, the suction tube doesn't take up much or release enough of the serum. There's a bit thats stuck, no matter how many times i try to squeeze it out, its still there. You have to squeeze at least twice to get a good amount for face and neck. The packaging is the only reason I wouldn't buy again. I hope they upgrade.

Didnt help my skin. Waste of money

i do enjoy this product. It has a really nice lumious finish once applied and makes my skin look lush once my routine is done. I havent used it long enough to see my pores get to where i want them but it seems like its helping my nose pores stay less congested!

I am 76 years young and about a year ago, my skin suddenly developed milia on my upper lip and chin. I was using a sonic facial brush, PTR 2% salicylic acid pads and LaRoche Posay 2% sallicylic acid face cleanser! No matter what I did, those little white bumps showed up every day, driving me to express them before washing my face. When I saw this product, I thought "maybe?" Well, it is indeed a miracle worker! No more milia, pores looking smaller on my nose - just rosy, healthy skin. I never had shiny, oily skin - just very over-productive oil glands in certain areas. This is great because it lessens any red marks (I also have Rosacea) and doesn't dry out the non-problem areas of my face. I absolutely recommend - regardless of your age!

I was really happy with this product at first. It does what it claims it will do. But with every day use I noticed my pores were getting more and more clogged. I was getting blackheads and breakouts, and my sebaceous filaments were getting larger. As soon as I stopped using this my skin smoothed out again. I definitely would not recommend this for every day use. I will keep this to use for special events only.

I have skin discoloration/blemishes on my face from healed contact dermatitis breakouts and I've tried toners, exfoliation, steroid cream and other niacinamide products. I've used the COSRX Niacinamide 15 serum for a few days 2x/day and have already seen a significant improvement in the blemishes ! Have a feeling they'll be completely gone within a month. Amazing.

I am in LOVE with this serum. It just works like straight up magic on my face and addresses so many things all at once with absolutely zero irritation at all. I have fair-light combination skin that, thanks to my irish ancestors, makes any blemish and any leftover healing spots a bright red glaringly obvious mark on my fair pinkish ubdertoned skin. They used to take FOREEEVER to fade. I mean months. Not anymore. I struggle with large stretched out pores from excess sebum production in certain areas of my tzone. Not anymore. Have problems with breakouts and blackheads in certain places that just seem to have frequent issues. Not anymore. I used to just have random redness from unknown irritant here and there. Not anymore. Super shiny tzone by afternoon. Not anymore. This stuff fixed it all for me. And it did it FAST. I'm talking noticeable effects in minutes. Even better an hour later. Still awesome hours later. Next day awesomeness. Consistent use cleared all my problems in a matter of days. I'm obsessed and I want to buy all bottles so no one else can have them so I'll never run out. I shouldn't be leaving this review and telling people about my magic serum. But I can't help it. I just have to sing it's praises because I need Cosrx to know I need a lifetime supply.

I liked this but I dont feel like the product is worth it for the small amount you get. 0.67oz. Not even a full ounce, so it is gone very quickly. The package itself is very bulky and heavy alluding to there being more product. I would be willing to pay for more product in a more environmentally friendly package.

I have almost used all of my first bottle of the COSRX Niacinamide and just ordered another bottle! I saw a difference in my skin within two days. My pores are smaller, and my sebaceous hyperplasia bumps are disappearing! It's not oily and quickly absorbs into my skin- making it great for my morning routine. I gave it 4 stars because the dropper is not able to suck out the last quarter or so of product. I've had to pour it on my hand to apply, which ends up wasting some as it's easy to pour too much. Also, the bottle is only .67 ounces compared to most serums being at least a full 1 ounce.

My skin is no longer oily and looks so healthy. Breakouts have totally cleared after just two weeks, just by adding this to my nighttime routine. My skin is so sensitive that I'm allergic to some fabrics, but this doesn't cause any redness or swelling. Highly recommend!

I have OCD and pick my skin. I have a lot of scarring and skin discoloration from past picks. This product is clearing up the scarring and evening skin tone.

I've only had it for about 2 weeks, but so far it hasn't done much for my skin, and feels like it has been causing more pimples rather than eliminating. I heard it might be skin purging, but I'm not so sure. Not very impressed

I have used this product for two weeks and apply it after a BHA. Over the past two weeks I have noticed my pores appear smaller. My only problem was that I think I put it on too frequently in the beginning and caused my skin to flare up and become red. Overall, if you are careful of your skin sensitivity this product will work well for you. I do notice a slight burning when I apply this product, but after my first flare up my skin has been quite happy with it.

I love this so much I even had tried other products from the same company and overall the Korean skincare that they offer is amazing and it has cleared up my skin. This product helped out a lot because I mix this with their all in one moisturizer and it helps a lot with glowing and healing scars and making sure that my pores aren't huge and even controlling the oil that I produce throughout the day in my face. I highly recommend it as you can see when I post this comment they are currently sold out !!

I got this during the 21 day Ulta sale and so glad I did. This feels hydrating, plumps the skin, and gives that "inner glow" from within. For reference, I use a tret compound everyday and that makes my skin dry. Using this serum has helped my skin apprear less dry, more youthful by plumping up some areas of my cheeks. It's not a miracle change, but its enough for me to see a small change. I am curious as to what can happen with continued use. ❤️ I will continue to buy the CosRx Niacinamide 15 serum whether it's on sale or not.

Absorbs well into skin and has inproved the loom and feel of my skin within days.