COSRX The 6 Peptide Skin Booster Serum - 5.07 fl oz - Ulta Beauty
$22.00 was $25.00
New lower price save $3.00 (12% reduction)
Size5.07 fl oz
In Stock
Eligible for registries and wish lists
At a glance
About this item
Additional product information and recommendations
Related Categories
Discover more options
- $65.00$39.00 with Target Circle4.1 out of 5 stars with 90 ratings
Frequently bought together
- Bestseller$11.49 - $24.99Buy 3, get 1 free on select beauty minis on select items4.5 out of 5 stars with 5259 ratings
- $13.49 - $23.99Lower price on select items4.5 out of 5 stars with 2390 ratings
Guests also viewed
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 26541 reviews
42% would recommend
7 recommendations
5 out of 5 stars
23 May, 2026
originally posted on cosrx
This is a perfect serum
[This review was collected as part of a promotion.] This is a perfect serum that penetrates your skin quickly so you can layer with additional items. The ingredients are exactly what I am looking for in a peptide serum.
4 out of 5 stars
20 May, 2026
originally posted on cosrx
Just got this use in
[This review was collected as part of a promotion.] Just got this use in the am. Not sticky and barely noticeable. Use in the am before makeup. Will need longer to see if it’s making a difference. I do wish I had cosRX as a teen it would have helped.
5 out of 5 stars
18 May, 2026
originally posted on influenster.com
Very nice!
[This review was collected as part of a promotion.] Loved this serum! Not a fan that’s it’s from a snail though but I do love how it made my skin feel afterwards. It left my skin very glowy and moisturized!
5 out of 5 stars
17 May, 2026
originally posted on cosrx
Love this product! Goes on
[This review was collected as part of a promotion.] Love this product! Goes on so nice and brightens my skin!
3 out of 5 stars
17 May, 2026
originally posted on influenster.com
More like a booster for your other serums
[This review was collected as part of a promotion.] It's more of a feel good product. Didn't see any change in my face. I used them as a toner before using my other products. Consistency is more like thick water. Packaging is fine, easy to use pump. I have normal to dry skin.
5 out of 5 stars
17 May, 2026
originally posted on cosrx
Amazing! I have been using
[This review was collected as part of a promotion.] Amazing! I have been using this in combination with the Snail 92 all in one cream. I live in a dry climate so it helps keep my skin moisturized without feeling greasy.
5 out of 5 stars
12 May, 2026
originally posted on cosrx
Almost seeing results
[This review was collected as part of a promotion.] The booster serums is not working at this moment it’s only bend one week
5 out of 5 stars
8 May, 2026
originally posted on influenster.com
Very gentle on my skin
[This review was collected as part of a promotion.] Perfect serum love it a lot. It helps with irritation and moisturizes your skin sooo much. I have been using it every day and can’t imagine my skin routine without it
5 out of 5 stars
5 May, 2026
originally posted on influenster.com
I will definitely keep using this!
[This review was collected as part of a promotion.] I was supposed to receive this product from Influenster, but when I got the box it did not contain the product. So I was confused and deleted the app for a while. But, I have since tried the product and it is fantastic. It really takes the age out of your facial/neck skin. I’ve purchased it twice so far, and despite it being a wonderful product it is actually pretty affordable. I will definitely be buying this again.
5 out of 5 stars
5 May, 2026
originally posted on influenster.com
Fine lines GONE
[This review was collected as part of a promotion.] This skincare was amazing. I had purchased it before and was so happy when I received it. The texture is not too sticky or thick. It is the perfect consistency for skin rather your skin be dry or combination skin. My fine lines had went away within a couple of runs of recurrent use daily.
5 out of 5 stars
5 May, 2026
originally posted on cosrx
Love how it is brightening
[This review was collected as part of a promotion.] Love how it is brightening up my skin. My skin feels incredibly smooth.
5 out of 5 stars
2 May, 2026
originally posted on influenster.com
Perfect, light and effective
[This review was collected as part of a promotion.] This is such an amazing step in my skin care. The product is light and absorbs easily. A little product goes a long way. This did exactly what I wanted it to do.
5 out of 5 stars
30 April, 2026
originally posted on influenster.com
Great price for amount
[This review was collected as part of a promotion.] Great size product, liked the consistency not too thick, affordable, lightweight. Packaging is nice and simple. No scent which is good for sensitivity.
5 out of 5 stars
30 April, 2026
originally posted on influenster.com
My face looks years younger!
[This review was collected as part of a promotion.] Scent free or if there is I have never noticed it. Goes and is absorbed quickly. And it magically erases years from skin!! Like even tone, healthy complexion, smooth skin and more. This is my must have item to start my day!!!
5 out of 5 stars
28 April, 2026
originally posted on influenster.com
Skincare routine staple
[This review was collected as part of a promotion.] The best addition to my skincare routine. This product leaves my skin so glowy and hydrated which is aloe coming from someone who has super red, sensitive and dry skin naturally.
4 out of 5 stars
26 April, 2026
originally posted on influenster.com
Excellent product
[This review was collected as part of a promotion.] The 6 peptide skin booster (/serum)/ Hyaluronic acid Nag +amino acids +even skin tone +hydrating Firmness & smooth +pore &sebun care Improve skin texture
5 out of 5 stars
26 April, 2026
originally posted on influenster.com
Works Well!
[This review was collected as part of a promotion.] I still use this product almost daily! I was worried about my skin getting too dry, even though I have combination skin. It works to provide a natural moisture layer that won’t leave any residue.
5 out of 5 stars
26 April, 2026
originally posted on cosrx
Highly Recommend
[This review was collected as part of a promotion.] Has a really lightweight, almost watery texture that absorbs quickly and doesn’t leave any sticky feeling behind. Most importantly, it didn’t irritate my skin or cause any breakouts. After using it consistently my skin is starting to feel smoother. It has not been an overnight transformation, but I have noticed that my skin is looking healthier and more even as time goes on. It also layers really well with the rest of my skincare, which I appreciate. If you have sensitive skin this is a solid option. It’s gentle, effective, and easy to incorporate into your routine.
5 out of 5 stars
26 April, 2026
originally posted on cosrx
Only started to use few
[This review was collected as part of a promotion.] Only started to use few days ago, so I can't tell if they are effective. But I like the texture of the products.
5 out of 5 stars
25 April, 2026
originally posted on influenster.com
Love this
[This review was collected as part of a promotion.] I absolutely love this product. Leavea my akin feeling great. Helps with the sebum buildup. Great to use before other face products. No greasy or sticky feeling.