COSRX The 6 Peptide Skin Booster Serum - 5.07 fl oz - Ulta Beauty
$22.00
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Guests are saying
The 6 Peptide Skin Booster Serum is a lightweight and hydrating product that absorbs quickly into the skin, making it an excellent addition to any skincare routine. Guests appreciate its smooth application and the way it enhances the overall texture and glow of their skin. Many have noted improvements in hydration, reduced redness, and a more even skin tone. This serum is particularly suitable for sensitive skin, providing a gentle yet effective solution for various skin concerns.
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 26586 reviews
42% would recommend
7 recommendations
5 out of 5 stars
10 July, 2026
originally posted on cosrx
I loveeee
[This review was collected as part of a promotion.] I loved this product although the texture could be better but everything else is very good I loved it tell me if you have tried it and how it went thank you
5 out of 5 stars
9 July, 2026
originally posted on cosrx
It’s a keeper!
[This review was collected as part of a promotion.] Love love love! I see a difference in my complexion, more even and smooth. I will definitely keep using it. It has a good consistency and easily absorbs into the skin.
5 out of 5 stars
8 July, 2026
originally posted on cosrx
Olive skin tone. This is
[This review was collected as part of a promotion.] Olive skin tone. This is immediately hydrating. I have two bottles. One I keep in bag to use during the day.
5 out of 5 stars
8 July, 2026
originally posted on cosrx
My second time purchasing this.
[This review was collected as part of a promotion.] My second time purchasing this. Skin always looks healthier when I'm actively using it
5 out of 5 stars
6 July, 2026
originally posted on influenster.com

smoother skin
[This review was collected as part of a promotion.] Packaging was simple and not wasteful. It made my pores smaller and skin feel soft. I was able to use under makeup. No greasy feeling and light wear.
5 out of 5 stars
5 July, 2026
originally posted on cosrx
Love it!!!
[This review was collected as part of a promotion.] I am really enjoying this booster serum. It’s feels very hydrating on my skin. 🫶🏾
5 out of 5 stars
4 July, 2026
originally posted on influenster.com

Definitely a must-have
[This review was collected as part of a promotion.] The COSRX 6 Peptide Skin Booster Serum really does the job! It absorbs nicely into the skin without feeling heavy or sticky. The scent is unscented and is very hydrating after us. My skin felt more plump and smooth after use!
5 out of 5 stars
1 July, 2026
originally posted on cosrx
I love this product! I’ve
I love this product! I’ve always hated greasy or oily face products. This works perfect for me. I splash it on and it feels great. It makes my dry skin look hydrated.
5 out of 5 stars
1 July, 2026
originally posted on cosrx
My favorite everyday peptide booster.
My favorite everyday peptide booster. Love the way it makes my skin feel and look!
5 out of 5 stars
1 July, 2026
originally posted on cosrx
I love this product. Clean
[This review was collected as part of a promotion.] I love this product. Clean and doesn't cause reaction. Moisturizing
4 out of 5 stars
30 June, 2026
originally posted on influenster.com

Peptide boost
[This review was collected as part of a promotion.] This did not make much of a difference for me unfortunately. I have semi sensitive skin so this did not cause any drastic change either good or bad!
5 out of 5 stars
30 June, 2026
originally posted on cosrx
Works well - feels great
[This review was collected as part of a promotion.] Works well - feels great on my skin and combines several serums in one. Less clutter and same results!
5 out of 5 stars
29 June, 2026
originally posted on cosrx
Love this product! On my
[This review was collected as part of a promotion.] Love this product! On my second bottle, it last a long time.
5 out of 5 stars
29 June, 2026
originally posted on cosrx
I bought this and instantly
[This review was collected as part of a promotion.] I bought this and instantly repurchased 4 more. I use it as an all over booster for my body. Absolutely love it
5 out of 5 stars
25 June, 2026
originally posted on cosrx
This is the best skincare
This is the best skincare line I have ever used! Amazing improvement in my skin. Originally purchased to help with rosacea and it has definitely reduced redness and sensitivity but it has also completely changed my skin for the better: smaller pores, hydration, reduced lines and other signs of aging, i get compliments on my skin all the time!!!
5 out of 5 stars
24 June, 2026
originally posted on cosrx
Good add to the routine
[This review was collected as part of a promotion.] One of my favorite products. Its gentle and never burns even on broken barrier skin. I use it morning and night and feel like it helps give skin extra moisture and bounce.
5 out of 5 stars
23 June, 2026
originally posted on influenster.com

: A fantastic, budget-friendly hydrating base layer for glowing skin, but it needs to be paired with a retinoid or vitamin C if you are fighting heavy scarring.
[This review was collected as part of a promotion.] The COSRX 6 Peptide Skin Booster is a phenomenal addition to any routine if your goals are hydration, overall radiance, and fading fresh marks from blemishes. It does exactly what a booster should do—it elevates the rest of your skincare routine while giving your skin a plump, glass-like finish. However, if your primary goal is fixing deep structural texture, you will need to rely on this as a base layer and pair it with a strong retinoid or professional treatments
5 out of 5 stars
21 June, 2026
originally posted on cosrx
This is very light and
[This review was collected as part of a promotion.] This is very light and hydrating. I really think the serum is helping plump up my skin. I like the bottle design too. :)
5 out of 5 stars
21 June, 2026
originally posted on cosrx
My favorite serum. You need
[This review was collected as part of a promotion.] My favorite serum. You need only a pump so it lasts forever. It is hydrating and plumping.
5 out of 5 stars
18 June, 2026
originally posted on influenster.com

Nice cooling texture
[This review was collected as part of a promotion.] This made my skin feel soft, supple and gave an overall smoother appearance. It felt cooling on the skin and had a very nice texture. The bottle provided easy use.