COSRX The 6 Peptide Skin Booster Serum - 5.07 fl oz - Ulta Beauty
$25.00
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Guests are saying
The Cosrx 6 Peptide Skin Booster Serum has garnered positive feedback for its lightweight, hydrating formula that absorbs quickly without leaving a sticky residue. Guests appreciate its ability to improve skin texture, tone, and hydration, making it a valuable addition to their skincare routines. The product is scent-free, suitable for various skin types, and comes in a convenient pump bottle, enhancing its usability and effectiveness. Many guests have reported visible improvements in their skin after consistent use.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
4.6 out of 5 stars with 26442 reviews
33% would recommend
6 recommendations
5 out of 5 stars
Thumbs down graphic, would not recommend
22 February, 2026
(no review title)
Amazing! Great for sensitive skin and refining skin texture. Lasts a long time!
5 out of 5 stars
18 February, 2026
originally posted on influenster.com

Good
[This review was collected as part of a promotion.] BEST PRODUCT. Currently a busy mother who been dealing with breakout and is trying to find a way to fight this skin breakdown. This product is a life saver for the dryness of this weather
4 out of 5 stars
15 February, 2026
originally posted on influenster.com

Hydrated, plump and smooth skin
[This review was collected as part of a promotion.] All in all the packaging is efficient for dispensing the product. The consistency is nice, not tacky or sticky. Glides onto the skin and absorbs quickly. A solid price for the ingredients. I saw the benefits when layering with the rest of my skincare routine.
5 out of 5 stars
14 February, 2026
originally posted on cosrx
Being stuck in a very
[This review was collected as part of a promotion.] Being stuck in a very dry winter currently I wanted something that would hydrate my skin and even out the redness and this has done the trick!! Using it daily and I have seen a big difference in my skin
5 out of 5 stars
14 February, 2026
originally posted on cosrx
Feels very good. So far
[This review was collected as part of a promotion.] Feels very good. So far enjoying it. Will see how it works after using for a while.
2 out of 5 stars
12 February, 2026
originally posted on influenster.com

Not for me!
[This review was collected as part of a promotion.] So this brand is well known i am quite aware! However it was a no go for me! I tried it multiple times hoping I would have different results but it was always the same. My skin is pretty sensitive and this dried my skin out pretty bad! This happened different times so it wasn't a fluke! This is just not for me!
5 out of 5 stars
12 February, 2026
originally posted on cosrx
I’ve been really impressed with
[This review was collected as part of a promotion.] I’ve been really impressed with this skin booster. The texture is very watery and lightweight, so it absorbs almost instantly without feeling sticky or heavy. As soon as I apply it, my skin feels fresh, soft, and hydrated. Even when I use just a cleanser followed by this serum, my skin looks noticeably brighter and feels smoother.
5 out of 5 stars
11 February, 2026
originally posted on influenster.com

Buy this product!
[This review was collected as part of a promotion.] Loved the feeling of my skin after using this product! It lasted a couple of hours. The smell isn’t overpowering. Definitely worth every penny!
5 out of 5 stars
8 February, 2026
originally posted on influenster.com

This stuff is gr8
[This review was collected as part of a promotion.] I loved this peptide skin booster! I always used it right after the shower before my skin care routine & noticed my face looked a lot brighter vs when I wasn’t using it! I definitely recommend
5 out of 5 stars
8 February, 2026
originally posted on influenster.com

My skin feels noticeably more hydrated and plump,
[This review was collected as part of a promotion.] Yes! This is very helpful! Happy to use it for three months and see results that is incredible! Will recommend to friends who need moisturizer and tone for a healthy and shiny look
5 out of 5 stars
6 February, 2026
originally posted on influenster.com

Great hydration
[This review was collected as part of a promotion.] This is a lightweight serum Great hydration , and very hydrating for my face , I love this product can't wait to buy the whole line in the future corsx
5 out of 5 stars
6 February, 2026
originally posted on influenster.com

Get it!!
[This review was collected as part of a promotion.] I absolutely love this product, I’ve used the whole bottle and will be buying a new one!! I’ve used it every morning since ive got it and it has lasted me a little over a year!! it makes my skin sticky but in a good way because it helps with building on more products. A little goes a long ways as well:) highly recommend this product!
5 out of 5 stars
5 February, 2026
originally posted on cosrx
The perfect first step before
[This review was collected as part of a promotion.] The perfect first step before the rest of my skincare.
5 out of 5 stars
5 February, 2026
originally posted on cosrx
Very light, refreshing, and effective
[This review was collected as part of a promotion.] Very light, refreshing, and effective serum. I apply it right after cleansing both AM and PM.
5 out of 5 stars
5 February, 2026
originally posted on cosrx
I have very reactive and
[This review was collected as part of a promotion.] I have very reactive and sensitive skin and have tried SO may different products that my skin just reacted to. Cosrx products have been wonderful on my skin. It is gentle, hydrating yet effective! Highly recommend!!
5 out of 5 stars
3 February, 2026
originally posted on influenster.com

My face feels fantastic!
[This review was collected as part of a promotion.] I can't get over how amazing my skin feels!!! Its hydrated, smooth and firm!!!! It applies well and easily with a nice scent! I can't wait to continue using it!
5 out of 5 stars
2 February, 2026
originally posted on cosrx
Love this serum, use it
[This review was collected as part of a promotion.] Love this serum, use it daily. It helps to moisturize my skin very well.
5 out of 5 stars
1 February, 2026
originally posted on influenster.com

Lightweight and Perfect
[This review was collected as part of a promotion.] This serum is light and has a wonderful refreshing smell. Overall I love the wase of coverage with just a small amount needed. I do have sensitive skin and it did not cause any irritation. Overall a great item!
5 out of 5 stars
31 January, 2026
originally posted on cosrx
Super easy. Goes on evenly.
[This review was collected as part of a promotion.] Super easy. Goes on evenly. This is put on after toner to prep the skin to receive all the benefits of the moisturizer. Super chic look for packaging. You can remove the original sticker. Quality is terrific. I love it.
5 out of 5 stars
28 January, 2026
originally posted on influenster.com

Would Buy this Again!
[This review was collected as part of a promotion.] I use this every morning and night in my skin care routine. I love how hydrating it is, especially in this really dry winter season. I do not get any breakouts or feel like it negatively affects my skin. It’s been a great addition to my routine.