COSRX15% Niacinamide Face Serum, 0.67 fl oz, Pore Minimizer Serum for Face, Even Skin Tone, Korean Skin Care

I have large pores on my nose mostly. Have tried just about everything including really expensive products. I decided to try this one last product. I have been using twice daily for a week. I am surprised to say its is working ! Not a miracle ,but I am seeing results! Will update after a few more weeks. easy to apply and the bottle with dropper is excellent No product waist. Give it a try

I dont usually write reviews, but this product deserves one! I don't have rosecea but have always had redness on my cheeks and this product has helped diminish that. It took me a few months before I realized this serum is the only thing I was doing different in my skincare routine. It also doesnt make your face feel sticky and that's what I struggle with a lot of serums.

Love this, always works for me, have been consistently using it every month for over a year. I tried other products and this one is the one that does it for me. It makes your skin feel smooth, and the appearance is good. The scent isn’t bad, I donMt really notice it anymore and it’s not super sticky or anything.

Great quality product but the bottle design is a problem. The short wide bottle with a dropper means that towards the end you are left with much more product waste than if it were packaged in a narrower bottle with a pump or even a dropper. While I love the product I won’t be purchasing again unless they change the design of the bottle. Unfortunately although I have no complaints about the quality of this product, which I find effective even for my very sensitive skin, there are many comparable products out there that don’t make me feel like I am wasting my money because it is so difficult to access the last 25 percent of the bottle content.

I am turning 58 tomorrow. I have always taken very good care of my skin, enen when I was young. I still dont really have any wrinkles, but my poors got bigger. In two weeks this stuff has dramatically made a huge difference. I got in my car with the sun in my face the other day and looked up in the rear view mirror. I immediately looked back again into the mirror because my skin looked like glass. Ive been using Cosrx for years now, and their products are fantastic.

Esta niacinamida cumple muy bien su función, tengo la cara super grasosa pero con ella se me controla mucho la producción de sebo y se me mejora la textura de los poros, seguiré comprándola.

While searching for products to help fade melasma, I decided to get something with niacinamide instead of vitamin C because of its instability. However, I really wish I would have done a little more research.. After using this for almost a month, I found out that the percentage is much too high for first-time users and/or those with sensitive skin. I might have been fine if I would have slowly introduced it into my routine by using the tiniest amount once or twice a week, but I had no idea that we have to build up a tolerance to new treatment products before we can use them daily.So, my skin is very oily, extremely sensitive, with enlarged pores and melasma. Right off the bat I started using a dropper full of this day and night. 🤦🏻‍♀️ BIG mistake. Not only was my face cherry red all day long, but it dried out my skin in certain areas, AND because I did not bring it close to my eyes or lips, there were noticeably brighter rings around them. It looked like I had a shade of concealer around my eyes and lips that was 5x lighter than my skin tone. A little over a week ago I quit using it entirely, thank goodness I did. Within a couple of days the dry areas and red irritation disappeared, while the bright rings finally returned to my normal skin tone. I regret not taking a picture when it was obvious enough for others to see, you will just have to take my word for it. 😋Another reason 15% is too strong—maybe unless you are an EXPEIRENCED user—is that many other products we use already have a small percentage of niacinamide added into their serums/moisturizers. For example, CeraVe has it in almost all of their moisturizers and sunscreens. So layering that on top off 15%, could possibly be giving your skin an overdose of up to 16-20% or more. ❗️🚨❗️ At those concentrations it could be very harsh and do the exact opposite of its intended treatment.That being said, if you already have a tolerance to niacinamide and are using other serums/moisturizers that lack it, I would definitely give this a try. 👍 Otherwise, I strongly suggest starting with 5% and working your way up to 10%. Also, be aware of the niacinamide content in other products you use with this!Finally, as for the product itself, because I used it wrong, I don't have much to truly review other than I did notice it helped with excess sebum control. For me, that only benefit was not worth the side effects I encountered. 🙅🏻‍♀️Also, I noticed a few reviews mention you have to “shake” this before you using it. While that is true, I would not actually shake it as if I am trying to mix a protein drink. Instead, open it and squeeze the dropper to empty it. Close it back up WITHOUT squeezing it again, you want the dropper to be sans product while you do this. Roll it back and forth a few times between your palms like you would a nail polish, turn it around and roll it again. That’s all you have to do.In concluson, because I do love COSRX products, for the extra sebum it got rid of, and the hope that this serum will do its thing when I work up a proper tolerance to it, I rate it 3 stars. They lose two because it is too strong and because they could easily warn consumers how to work up a tolerance for daily use, yet neglect to. 👎I hope this helps.

This niacinamide serum is amazing! It reduces redness, tightens pores, and leaves my skin smooth and balanced. Lightweight, absorbs quickly, and works great under makeup. Highly recommend