SKIP TO MAINSKIP TO FOOTER

Free standard shipping on any $35 purchase

Use the following zoom and pan buttons to control the image that follows them

COSRX The 6 Peptide Skin Booster Serum with Niacinamide & Hyaluronic Acid #1
COSRX The 6 Peptide Skin Booster Serum with Niacinamide & Hyaluronic Acid #1

COSRX The 6 Peptide Skin Booster Serum with Niacinamide & Hyaluronic Acid

$21.00

Replenish & Save

Size:5.07 oz

Pickup and delivery options

In stock and ready to ship

Save 5% and get free shipping on each subscription order. Cancel anytime!

Yay! You are earning rewards points on this purchase.

Details

Benefits

  • Boosts overall skin condition such as pore&sebum, firmness, fine lines, skin texture, skin tone and soothing
  • Makes your skin soft and smooth with skin tone and texture after use
  • Non sticky, lightweight texture to absorb quickly

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

Item 2621867

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.

Ingredients

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.

Shipping & Coupon Restrictions

This brand is excluded from most Ulta Beauty coupons.

See brand eligibility details

Frequently bought together

3 items

Current Product

COSRX

 

The 6 Peptide Skin Booster Serum with Niacinamide & Hyaluronic Acid

4.6(5329)
$21.00

COSRX

 

Advanced Snail 96 Mucin Power Essence

4.7(4059)

Size

3.38 oz

$20.90

COSRX

 

Advanced Snail 92 All In One Cream

4.6(2013)

Size

3.52 oz

$21.90

Make it a routine

Add these personalized recommendations to complete your beauty routine.

Step 1

La Roche-Posay

 

Toleriane Purifying Foaming Face Wash for Oily Skin

4.6(3312)

Size:

13.5 oz

$19.99

Step 2

Current Product

COSRX

 

The 6 Peptide Skin Booster Serum with Niacinamide & Hyaluronic Acid

4.6(5329)
$21.00

Step 3

La Roche-Posay

 

Toleriane Double Repair Face Moisturizer with Niacinamide

4(1973)

Size:

3.38 oz

$25.99

We think you'll like

12 items

Sponsored products

12 items

Powered by syndigo
The 6 Peptide Skin Booster Serum

Q&A

Showing 4 out of 4 Questions
Q
Can I apply this onto a cotton pad and sweep over my face?
Asked by AJ
Official Answer By COSRX - Brand Engage
Yes, you can apply the serum onto a cotton pad and gently sweep it over your face. However, for optimal absorption, we recommend applying the serum directly to your skin with your fingertips. This method allows for better penetration of the active ingredients. If you prefer using a cotton pad, just be sure to use a gentle sweeping motion to avoid any irritation.Was this answer helpful to you
Q
Does this product function as a toner also?
Asked by D
Official Answer By COSRX - Brand Engage
Yes, it can be used as a toner and it will enhance the effects of subsequent serums or ampoules when used together.Was this answer helpful to you
Q
Hi! Could I use this with azeliac acid 10% from good molecules or is it not a recommended combination? Thank you.
Asked by LearningSkincare305
Official Answer By COSRX - Brand Engage
We are unable to provide accurate guidance on using with products from other brands. However, it's always best to introduce new products gradually and monitor your skin for any signs of irritation. As always, if you have sensitive skin or specific concerns, it's a good idea to do a patch test first or consult with a dermatologist.Was this answer helpful to you
Q
This product seems to make a coating over your face. I don't know if my moisturizer an SPF even get absorbed through it. It's very noticeable when you go to wash your face and there's definitely a slippery coating over your face that takes several water rinsing to get it off.
Asked by Curly
Official Answer By COSRX - Brand Engage
We appreciate your feedback and understand your concerns regarding the texture and absorption of the product. The serum is designed to provide hydration and enhance your skincare routine, but it may feel slightly slippery depending on individual skin types. To ensure optimal absorption of your moisturizer and SPF, we recommend applying these products after the serum has fully absorbed into your skin. If you find that the serum is leaving a coating that feels uncomfortable, you might want to adjust the amount you are using or allow more time for it to absorb before applying other products.Was this answer helpful to you

Review Snapshot

by PowerReviews

5329 ReviewsWrite a Review
85%
of respondents would recommend this to a friend
Ratings Distribution
Pros
No Pros
Cons
No Cons
Most Helpful Positive Review
Feels great.

**CosRX Peptide Serum: A Comprehensive Review** **Introduction** CosRX Peptide Serum is a highly concentrated serum that harnesses the power of peptides to improve skin health and appearance. Peptides are short chains of amino acids that act as messengers in the skin, stimulating collagen and elasti...

Versus
Most Helpful Critical Review
Radient Skincare

Since incorporating this serum into my skincare routine, I noticed a significant purging phase after about a week of use. After Influenster posted about it on Instagram, I discovered that many others experienced similar purging effects. I have dry/combination skin, and to manage the purging, I switc...

5329 results

Must Have

Submitted 3 days ago

By vivi

From Connecticut

It's the start of morning and night routine. When I bought my first bottle, it was unclear to me the importance and if it was truly working. After completely using two bottles, I can tell the difference in my texture and glow if I skip this step.

Was this review helpful to you?
My Favorite Serum

Submitted 1 month ago

By Amy

From Spokane, WA

The fact that this serum is under $30 and outperforms serums that are $100+ will never cease to amaze me. Not to mention the amount of product you receive is unreal. This serum does it all and then some. My skin looks and feels so much better within minutes after application. I will never stop repurchasing this product. It's truly incredible.

Was this review helpful to you?
CosRx Peptide Booster

Submitted 1 month ago

By Ann from Annapolis

From Annapolis, MD

Nice formulation. Goes on smoothly, leaving a bright, clear skintone. Sinks into skin quickly leaving no tackiness. I really prefer this product compared to other peptide serums I have tried. For reference: I am fair and generally wear sunscreen over the top of any serums. I am easily sensitized, but not with this product. I will be repurchasing.

Was this review helpful to you?
One of my staples

Submitted 1 month ago

By PinkSagittarius

From NY

Going on 3 years of using this morning and night. My skin definitely improved drastically. My routine - led dr dennis gross mask, then this then moisturizer then spf and same at night minus spf and add retinol/ aha alternating nights. I am 35 and according to an app that was very accurate at guessing ages i appear 26-28. This is a huge part of my routine. This must be my 10th bottle. I was about to buy and wanted to post a review first since this is one of the products i find actually worth buying.

Was this review helpful to you?
Great serum!

Submitted 1 month ago

By T

From Michigan

I received a deluxe sample of this and used it for a few weeks Love it ao much I bought the full size. It is so hydrating and makes my skin feel good. I love all the benefits and ingredients in one serum. It streamlines my routine. Definitely recommended this!

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?