5.0 out of 5 stars great deal! great brand!

A.C. · October 4, 2024

tried this brand on a whim, trying to find clean, cheap, k-beauty facial products and this was the winner. after using the peptide booster and essence and niacinamide for about 3-4 weeks now day and night i am completely sold. I have acne prone and combination skin, oily t-zone, drier on the cheek area, and sensitive around the nose, these products have not made me break out at all and ive even noticed significantly less breakouts. my red marks seem to be slowly fading too...i now use their other products as well and get a nice "glass skin" effect after using. My favorite part ,though, is the poor shrinkage this stuff is capable of! my only slightly downside of this, is that, in my opinion this stuff can be slightly drying, but as long as you pair it with a nice moisturizer your in the clear

5.0 out of 5 stars Packed with ingredients that really help skin for a great price + excellent Yuka ratings

s. · September 19, 2024

This COSRX Niacinamide and Peptide Booster Set is the perfect example of why Korean beauty is so popular; you can get quality products and ingredients at an affordable price.The peptide toner/serum is meant to be used after cleansing, and it can be used as one layer or even applied again for multiple layers. The peptides in this are listed high enough in the ingredient list that there is likely enough to genuinely improve skin, although note that improvement takes consistent usage over tiime. This has the famous Botox-in-the-bottle peptide, and while that name is aspirational, over time, it is thought to seriously improve hydration which in turn improves the appearance of wrinkles. The other various peptides have anti-oxidant properties, soothe inflammation, improve skin texture and strength, brighten skin, and reduce the appearance of wrinkles. Dipeptide diaminobutyroyl benzylamide diacetate probably has the least research backing it (it's all funded by the manufacturer), but overall, this is a great combo of peptides. This also has additional hydrating ingredients that help the skin barrier. Yuka 86/100 = excellent.The niacinamide serum is also great for skin. Niacinamide brightens skin, improves collagen production, and improves the skin barrier. It's also helpful for some inflammatory conditions. Yuka 100/100 = excellent.This serum has more niacinamide than many products, and while the vast majority of people will tolerate this concentration used as directed, anecdotally, some experience redness. Some temporary redness is not a problem (think of the niacin flush), but if the redness lingers or develops over time, you might want to use less, perhaps one drop mixed with a pump of the toner so you can spread it evenly. Usually, other ingredients are actually the problems for sustained redness, but anecdotally, some are more sensitive to niacinamide than others.I have fairly reactive skin, and both of these products work great for me. They absorb quickly and neither causes any reaction. They are a great addition to my routine since I use a strong retinoid and need to protect my skin barrier, but these ingredients should help just about every skin type. While some might be skeptical of skincare products improving skin, even my kid has noticed how great my skin looks since I started getting more serious about it 6-12 months ago.

5.0 out of 5 stars Another Cox Rx winner

b.e. · September 30, 2024

This COS RX Niacinamide 15% Peptide Booster Set contains 2 more fantastic products by the Korean brand Cos Rx! If you haven't tried their products, you should. My skin seems to like their products and, despite having sensitive skin, they haven't caused me any irritation.I followed the seller's suggestion to use the toner directly after cleansing and applied a few pumps of the peptide toner to my face using my fingers. I let that soak in for a minute and then applied a few drops of the niacinamide serum, again using my fingers to pat it into my skin. I followed up with my normal moisturizer. I prefer to do this routine in the evening, so that I can let my skin have time to absorb everything without worrying about my makeup getting icky.The peptide toner has a lot of great ingredients that can help reduce redness (which is a big issue that I have), give skin a more plump look and help make your skin look more nourished. After using this set for 2 weeks, my skin looks less irritated and feels softer. This would also make a great gift set for anyone wanting to try the Cos Rx brand.

4.0 out of 5 stars What would I tell you...

M.S.T.M. · September 16, 2024

What would I tell you...This review is for (their headline description):"COSRX Niacinamide 15% Peptide Booster Set, Niacinamide Serum & 6 Peptide Booster Toner, Daily Skincare Duo"What would I tell you about these products?We are to start with freshly cleansed skin.Then, apply 2 - 3 pumps of the "6 Serum".I used 4 for my average sized Mans face and neck.It's a pretty small amount that comes out per pump (regular pump bottle, not airless).The 6 Serum is a clear, colorless, watery product with no discernible scent.It is very much like most Hyaluronic serum products in its consistency and feel.After applying the 6 Serum, we are to apply 2 - 3 drops of the Niacinamide 15% serum.The Niacinamide 15% serum has very much the same look (also no scent that I perceive) but is just a little thicker, and after applying gives a slight feeling of stickiness for a short time, and then a sense of firming (but not tightness).With the Niacinamide 15% serum, I really did use only 3 drops, but on my face only, not my neck.I had done a razor/cream shave, and showered and dried off right before using these.The Niacinamide 15% serum gave just a little bit of sting which dissipated quickly; I would attribute that to the shave, and likely that won't be your experience.Otherwise, both products do not have a warming or minty effect on the skin, when applied and after.These seem like nice products that will last a while (good value) if used as directed.I've given a 4 star rating based on initial impressions and *perceived* quality, not on long term use or results.I hope this review has been helpful and enables you to make an informed purchase decision.I rarely give an overall 5 star rating.