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COSRX The 6 Peptide Skin Booster Serum - Ulta Beauty - 2 of 4COSRX The 6 Peptide Skin Booster Serum - Ulta Beauty - 3 of 4COSRX The 6 Peptide Skin Booster Serum - Ulta Beauty - 4 of 4
COSRX The 6 Peptide Skin Booster Serum - Ulta Beauty - 1 of 4

COSRX The 6 Peptide Booster Serum - 30ml - Ulta Beauty

$9.00
Size1.01 fl oz

In Stock

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At a glance

About this item

Highlights

  • Provides overall skin benefits such as pore&sebum care, increased skin firmness, reduction of fine lines, smoother skin texture, and a more even skin tone
  • Improves skin texture and tone with daily use
  • Non sticky, lightweight texture to absorb quickly

Description

The 6 Peptide Skin Booster Serum from COSRX enhances overall skin condition as your first step serum.


Key Ingredients:

SH-Polypeptide-121: Collagen Boosting & Plumping

Copper Tripeptide-1: Retexturize

Dipeptide Diaminobutyroyl Benzylamide Diacetate: Excess Sebum & Pore Care

Oligopeptide-68: Brightening

Palmitoyl Tripeptide-8: Soothe & Reduce Skin Sensitivity

Acetyl Hexapeptide-8: Smooth Fine Lines & Firmness


How to use:

After cleansing you may use this serum as the first step of skin care. Spread the serum on the entire face and you may apply several times to amplify the effect of the next serum or ampoule.


All COSRX products are dermatologist-tested, hypoallergenic, paraben-free, sulfate-free, phthalate-free, and alcohol-free.
Scent: Unscented
Trial/Mini/Travel Size: Yes
Health Facts: Alcohol-Free
Product Warning: Eye irritant
Product Form: Liquid
Beauty Purpose: Fine Line Reduction, Anti-Aging, Acne-Prone, Combination, Dark Spot Reduction, Pore Reduction, Oil Control, Brightening, Smoothing, Anti-Acne
Recommended Skin Type: Acne-Prone, Combination, Dry, Mature, Extra Sensitive, Normal, Oily, Sensitive
TCIN: 94264826
UPC: 8809598455900
Item Number (DPCI): 342-01-2114
Origin: Imported
Healthcare Disclaimer:
Content on this site is for reference purposes only. Target does not represent or warrant that the nutrition, ingredient, allergen and other product information on our Web or Mobile sites are accurate or complete, since this information comes from the product manufacturers. On occasion, manufacturers may improve or change their product formulas and update their labels. We recommend that you do not rely solely on the information presented on our Web or Mobile sites and that you review the product's label or contact the manufacturer directly if you have specific product concerns or questions. If you have specific healthcare concerns or questions about the products displayed, please contact your licensed healthcare professional for advice or answers.
If the item details aren’t accurate or complete, we want to know about it.

Shipping details

Estimated ship dimensions: 1.07 inches length x 1.07 inches width x 1.14 inches height
Estimated ship weight: 0.11 pounds

Return details

This item can be returned to any Target store or Target.com.
This item must be returned within 90 days of the date it was purchased in store, delivered to the guest, delivered by a Shipt shopper, or picked up by the guest.
See the return policy for complete information.

Q: Please provide the actual ingredients list as shown on package/bottle.

submitted by detailsdetails - 10 months ago

  • A: Full ingredient list from COSRX website: Water, Dipropylene Glycol, Glycerin, Pentylene Glycol, 1,2-Hexanediol, Niacinamide, Ammonium Acryloyldimethyltaurate/VP Copolymer, Polyacrylate Crosspolymer-6, Butylene Glycol, Xanthan Gum, Ethylhexylglycerin, Adenosine, Polyquaternium-51, Disodium EDTA, Citric Acid, Caprylyl Glycol, Betaine, t-Butyl Alcohol, Sodium PCA, Sodium Lactate, Acetyl Hexapeptide-8, Copper Tripeptide-1, PCA, sh-Polypeptide-121, Serine, Alanine, Allantoin, Sodium Hyaluronate, Acetyl Glucosamine, Glycine, Glutamic Acid, Lysine HCl, Threonine, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Arginine, Tocopherol, Oligopeptide-68, Proline, Dextran, Palmitoyl Tripeptide-8, Glycine Soja (Soybean) Oil, Hydrogenated Lecithin, Potassium Sorbate, Sodium Oleate

    submitted byAnna B - 6 months ago

  • A: Collagen Boosting SH-Polypeptide-121 Retexturize Copper Tripeptide-1 Excess Sebum & Pore Care Dipeptide Diaminobutyroyl Benzylamide Diacetate Brightening Oligopeptide-68 Soothing Palmitoyl Tripeptide-

    submitted byTammyRN - 7 months ago

Q: what is the percentage of copper peptide?

submitted by heathjez - 7 months ago

  • A: The Copper Tripeptide-1 is less than .1% of the ingredients.

    submitted byCOSRX - 5 months ago
    Brand expert

Q: Ingredients list please!

submitted by detailsdetails - 1 year ago

  • A: Full ingredient list from COSRX website: Water, Dipropylene Glycol, Glycerin, Pentylene Glycol, 1,2-Hexanediol, Niacinamide, Ammonium Acryloyldimethyltaurate/VP Copolymer, Polyacrylate Crosspolymer-6, Butylene Glycol, Xanthan Gum, Ethylhexylglycerin, Adenosine, Polyquaternium-51, Disodium EDTA, Citric Acid, Caprylyl Glycol, Betaine, t-Butyl Alcohol, Sodium PCA, Sodium Lactate, Acetyl Hexapeptide-8, Copper Tripeptide-1, PCA, sh-Polypeptide-121, Serine, Alanine, Allantoin, Sodium Hyaluronate, Acetyl Glucosamine, Glycine, Glutamic Acid, Lysine HCl, Threonine, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Arginine, Tocopherol, Oligopeptide-68, Proline, Dextran, Palmitoyl Tripeptide-8, Glycine Soja (Soybean) Oil, Hydrogenated Lecithin, Potassium Sorbate, Sodium Oleate

    submitted byAnna B - 6 months ago

Q: How much is in this bottle? Could not find ounces?

submitted by Tlynn - 2 years ago

  • A: A photo on one of the reviews shows it as being a large bottle: 150ml, which is about 5 oz.

    submitted byElliptigo Girl - 2 years ago

Q: When do you incorporate this into your skincare regime?

submitted by UserMG - 2 months ago

Q: Does this contain fragrance?

submitted by Rachel - 3 months ago

Q: Is it safe during pregnancy?

submitted by Kris - 3 months ago

Q: Is it breastfeeding friendly

submitted by Rai - 5 months ago

Q: Hi, can I use a vitamin c serum after applying this? I've read that copper peptide and vitamin C used in the same routine cancel each other's benefits out

submitted by AnneAnneAnneAnneAnne - 1 year ago
See all questions (9)

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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 26512 reviews
    42% would recommend
    7 recommendations
    5 out of 5 stars
    30 April, 2026
    originally posted on influenster.com
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    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.
    AdrianaA
    Did you find this review helpful?
    5 out of 5 stars
    28 April, 2026
    originally posted on influenster.com
    Image

    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.
    KendallF
    Did you find this review helpful?
    4 out of 5 stars
    26 April, 2026
    originally posted on influenster.com
    Image

    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
    SaraG
    Did you find this review helpful?
    5 out of 5 stars
    26 April, 2026
    originally posted on influenster.com
    Image

    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.
    EliseF
    Did you find this review helpful?
    5 out of 5 stars
    26 April, 2026
    originally posted on cosrx
    Image

    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.
    Breana C.
    Did you find this review helpful?
    5 out of 5 stars
    26 April, 2026
    originally posted on cosrx
    Image

    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.
    Eri P.
    Did you find this review helpful?
    5 out of 5 stars
    25 April, 2026
    originally posted on influenster.com
    Image

    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.
    CrystalB
    Did you find this review helpful?
    5 out of 5 stars
    24 April, 2026
    originally posted on cosrx
    Image

    Love this product! My second

    [This review was collected as part of a promotion.] Love this product! My second of many more purchases to come. It helps even out my skin tone and provides just the right amount of moisture to keep my combination skin hydrated but not oily. Hope they add some more anti-acne ingredients in the future though, as my chin congestion hasn't changed and I've been using the product for 6 months now.
    Inga S.
    Did you find this review helpful?
    3 out of 5 stars
    23 April, 2026
    originally posted on influenster.com
    Image

    Not Much Difference Seen

    [This review was collected as part of a promotion.] I was excited to try the 6 Peptide Skin Booster and had high expectations for it. While it did feel nice and cool on my skin, I didn't really see a difference in my skin texture or discoloration.
    GabrielleH
    Did you find this review helpful?
    5 out of 5 stars
    22 April, 2026
    originally posted on influenster.com
    Image

    Perfect

    [This review was collected as part of a promotion.] Great product that goes on easily and smoothly no matter your skin texture. This truly uses the peptide method to help fix your skin issues. Give this a try
    AdrianA
    Did you find this review helpful?
    4 out of 5 stars
    22 April, 2026
    originally posted on cosrx
    Image

    I’ve been using the COSRX

    [This review was collected as part of a promotion.] I’ve been using the COSRX The 6 Peptide skin booster for a few weeks now and I’m really happy with the results. My skin feels smoother, and I’ve noticed that my fine lines and pores look more refined
    Kanty K.
    Did you find this review helpful?
    5 out of 5 stars
    20 April, 2026
    originally posted on cosrx
    Image

    I have just started to

    [This review was collected as part of a promotion.] I have just started to use this product (1 week) with two other products from this brand and I am already seeing a difference. It is easy to use. It gives you the directions and a little goes a long way. I will definitely want to order more.
    Ambriel B.
    Did you find this review helpful?
    4 out of 5 stars
    19 April, 2026
    originally posted on influenster.com
    Image

    A great addition to the skincare routine

    [This review was collected as part of a promotion.] I’ve been using the COSRX Skin Booster Serum for a few weeks now, and overall, it’s a solid addition to my routine, just not quite a miracle product. The first thing I noticed is how lightweight and watery the texture is. It absorbs almost instantly and layers really well with other products, which makes sense since it’s designed as a “first-step” serum to prep your skin. My skin definitely felt softer and more hydrated after using it consistently, and it gave a subtle glow without feeling greasy. The formula uses multiple peptides along with hydrating ingredients to improve texture, elasticity, and overall radiance. That said, the results are more subtle than dramatic. While my skin felt smoother, I didn’t see a huge difference in fine lines or firmness on its own. It works best as a supporting product rather than a standout treatment—kind of like a booster that helps everything else perform better rather than stealing the show. I also appreciate that it’s gentle and suitable for sensitive or acne-prone skin, since it’s non-comedogenic and designed to be low-irritation. No breakouts or irritation for me, which is always a win. Overall, this is a great hydrating prep step if you like layering skincare or want something lightweight and versatile. Just don’t expect overnight transformation, it’s more of a steady, supportive product than a game-changer.
    RebeccaC
    Did you find this review helpful?
    5 out of 5 stars
    7 April, 2026
    originally posted on cosrx
    Image

    I really like this, it’s

    [This review was collected as part of a promotion.] I really like this, it’s very thin, almost watery. But it feels great on the skin and is very hydrating.
    Katie S.
    Did you find this review helpful?
    5 out of 5 stars
    4 April, 2026
    originally posted on cosrx
    Image

    This is in my skincare

    [This review was collected as part of a promotion.] This is in my skincare routine morning and night. First time I have ever used a booster and won’t be my last. Such a great remedy for fine lines.
    Keely B.
    Did you find this review helpful?
    5 out of 5 stars
    4 April, 2026
    originally posted on influenster.com
    Image

    Serum that packs peptides

    [This review was collected as part of a promotion.] This is a great serum. It has visibly changed the texture of my skin. I feel like my skin looks plumper and more hydrated. The peptides are amazing and my skin feels super soft.
    CrystalH
    Did you find this review helpful?
    5 out of 5 stars
    3 April, 2026
    originally posted on influenster.com
    Image

    Lightweight, hydrating serum that improves skin te

    [This review was collected as part of a promotion.] I’ve been using this serum for a few weeks and really like how lightweight if feels on the skin . My skin looks more hydrated and smooth, and over time I’ve noticed a subtle improvement in texture and overall glow. It layers well with other skincare products and doesn’t cause irritation, which is a big plus. A little goes a long way, so the bottle last quite a while. Overall it’s a grate everyday serum if you looking to boots hydration and improve skin appearance.
    ViktoriiaK
    Did you find this review helpful?
    5 out of 5 stars
    2 April, 2026
    originally posted on influenster.com
    Image

    Great for Sensitive skin

    [This review was collected as part of a promotion.] Great for my sensitive skin. I struggle to find products that don’t further irritate my skin but this was perfect which I really enjoyed. I am excited
    McKenzieO
    Did you find this review helpful?
    5 out of 5 stars
    2 April, 2026
    originally posted on influenster.com
    Image

    Refreshing

    [This review was collected as part of a promotion.] I loved this product especially after a shower. It is so hydrating and easy to apply. It didn’t leave any sticky residue and was easy to combine with my other skincare
    MelissaP
    Did you find this review helpful?
    5 out of 5 stars
    31 March, 2026
    originally posted on cosrx
    Image

    "I love the application and

    [This review was collected as part of a promotion.] "I love the application and how it melts into my skin. I'll need more time to see the full results, but I'm impressed. "
    Na K.
    Did you find this review helpful?

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