# COSRX The 6 Peptide Skin Booster Serum for combination skin

**Lovi Fit: High fit for combination skin.**
Combination Skin Fit: High · Effectiveness: High · Safety: High.

Page: https://lovi.care/skincare/fr/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin

The Lovi Fit is the same in every country; only the stores and prices differ, and the ones here are for France.

Brand: [COSRX](https://lovi.care/skincare/fr/brands/cosrx)
Category: [Moisturizers and moisturizing serums](https://lovi.care/skincare/fr/best/moisturizers)

This fit is calculated for the concerns frequently associated with combination skin: an oily T-zone, enlarged pores, and dry cheeks. For scores based on a full skin profile (12D face scan, goals, preferences), use the Lovi app.

One of the best moisturizers for combination skin.

## Why this fit

- Highly suitable for your combination skin, this serum features niacinamide and acetyl hexapeptide-8 to effectively control sebum and improve skin texture, addressing your oily shine concerns.
- The inclusion of multiple peptides like copper tripeptide-1 and polyquaternium-51 further enhances moisturizing and anti-aging effects, contributing to plumper skin and minimized fine lines.
- This formula is safe for your skin, containing no harsh ingredients and posing no risk of irritation.

## Fit by skin type

- [Oily skin](https://lovi.care/skincare/fr/p/cosrx/the-6-peptide-skin-booster-serum/for/oily-skin): High
- [Dry skin](https://lovi.care/skincare/fr/p/cosrx/the-6-peptide-skin-booster-serum/for/dry-skin): High
- [Combination skin](https://lovi.care/skincare/fr/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin): High (this page)
- [Sensitive skin](https://lovi.care/skincare/fr/p/cosrx/the-6-peptide-skin-booster-serum/for/sensitive-skin): High
- [Acne-prone skin](https://lovi.care/skincare/fr/p/cosrx/the-6-peptide-skin-booster-serum/for/acne-prone-skin): High
- [Skin with dark spots](https://lovi.care/skincare/fr/p/cosrx/the-6-peptide-skin-booster-serum/for/dark-spots): High
- [Mature skin](https://lovi.care/skincare/fr/p/cosrx/the-6-peptide-skin-booster-serum/for/mature-skin): Superior
- [Dry sensitive skin](https://lovi.care/skincare/fr/p/cosrx/the-6-peptide-skin-booster-serum/for/dry-sensitive-skin): Superior
- [Oily acne-prone skin](https://lovi.care/skincare/fr/p/cosrx/the-6-peptide-skin-booster-serum/for/oily-acne-prone-skin): High

## Key ingredients

Sodium Hyaluronate, Peptides, N-Acetyl Glucosamine, Niacinamide, Allantoin

## What the research says

- Topical application of 0.1% hyaluronic acid formulations of different molecular weights led to significant improvements in skin hydration and elasticity, with low-molecular-weight formulations also significantly reducing wrinkle depth in seventy-six female subjects compared to a vehicle control. ([Journal of Drugs in Dermatology, 2011](https://pubmed.ncbi.nlm.nih.gov/22052267/))
- Topical application of hyaluronic acid in conjunction with free gingival graft significantly reduced donor site postoperative pain until day 7 compared to normal saline, with no significant differences in graft dimensions or patient satisfaction. ([Clinical Oral Investigations, 2022](https://pubmed.ncbi.nlm.nih.gov/34623507/))
- Treatment with a hyaluronic acid-containing mouth rinse or topical gel led to significant lesion reduction, pain relief, and normalization of lesion color in adult patients with minor recurrent aphthous stomatitis, with the gel formulation showing an earlier healing onset at 3 days. ([BMC Oral Health, 2019](https://pubmed.ncbi.nlm.nih.gov/31311529/))
- Topical 2% N-acetyl glucosamine reduced facial hyperpigmentation in an 8-week split-face clinical test, with an even greater effect observed when combined with 4% niacinamide. ([Journal of Cosmetic Dermatology, 2007](https://pubmed.ncbi.nlm.nih.gov/17348991/))
- N-acetyl-glucosamine-loaded nanostructured lipid carriers successfully delivered the hydrophilic agent through the skin and reduced melanin distribution in healthy volunteers. ([Advanced Pharmaceutical Bulletin, 2016](https://pubmed.ncbi.nlm.nih.gov/28101465/))
- Topical cosmetic products containing hyaluronic acid, N-acetyl glucosamine, and gamma-amino butyric acid improved skin hydration by 24.28% to 33.60%, elasticity by 11.98%, and skin lightening by 5.26% over 2 months in 20 female participants. ([Journal of Cosmetic and Laser Therapy, 2019](https://pubmed.ncbi.nlm.nih.gov/30040516/))
- Topical post-laser application of human adipocyte-derived mesenchymal stem cell media combined with niacinamide significantly improved wrinkle index, melanin index, patient satisfaction, and investigator esthetic improvement scores compared to vehicle cream in patients with aging skin. ([Journal of Cosmetic Dermatology, 2021](https://pubmed.ncbi.nlm.nih.gov/33103316/))
- Topical nicotinamide prevented solar-simulated UV-induced immunosuppression in healthy volunteers, and men experienced immunosuppression at solar-simulated UV doses three times lower than those required for women. ([The Journal of Investigative Dermatology, 2008](https://pubmed.ncbi.nlm.nih.gov/17882270/))
- Topical 5% niacinamide applied twice daily for 12 weeks reduced fine lines and wrinkles, hyperpigmented spots, red blotchiness, and skin sallowness, and improved skin elasticity compared to vehicle control in 50 female white subjects with facial photoaging. ([Dermatologic Surgery, 2005](https://pubmed.ncbi.nlm.nih.gov/16029679/))
- Topical gel containing chitosan, 0.2% chlorhexidine, allantoin and dexpanthenol did not improve postoperative comfort regarding swelling and pain, but improved the wound's aesthetic appearance following impacted lower third molar extraction compared to no gel. ([Medicina Oral, Patologia Oral Y Cirugia Bucal, 2016](https://pubmed.ncbi.nlm.nih.gov/27475700/))
- A topical gel containing chitosan, chlorhexidine, allantoin, and dexpanthenol significantly reduced postoperative pain, trismus, swelling, and analgesic consumption, while improving wound healing after third molar surgery compared to a placebo. ([Medicina Oral, Patologia Oral Y Cirugia Bucal, 2020](https://pubmed.ncbi.nlm.nih.gov/32683390/))
- An overnight patch containing Allium cepa extract and allantoin safely promotes scar healing after dermatologic surgery, resulting in significantly greater reductions in observer- and patient-assessed POSAS scores compared to no treatment. ([Aesthetic Plastic Surgery, 2018](https://pubmed.ncbi.nlm.nih.gov/29948103/))

## What reviewers say

Based on a very large amount of data, users consistently praise this serum as a lightweight, water-like "booster" that significantly improves skin texture and hydration without heaviness. It is widely celebrated for smoothing pores and creating a "glass skin" glow. A small minority of users with specific sensitivities experienced breakouts or closed comedones.

- Liked: Lightweight & fast-absorbing (mostly mentioned)
- Liked: Hydrating & plumping (often mentioned)
- Liked: Improves skin texture (often mentioned)
- Liked: Gentle & non-irritating (sometimes noted)
- Disliked: Caused breakouts (rarely noted)
- Disliked: Ingredient sensitivities (rarely noted)
- Disliked: No visible results (rarely noted)
- Disliked: Sticky residue (rarely noted)

## How to apply

- Use this moisturizer in your AM and PM routine every day to control shine. Always pair with SPF in the morning.
- Apply this moisturizer after your cleanser and toner, right before your morning SPF.
- Gently press a small amount of the moisturizer into your skin and avoid harsh rubbing. Let it ⏳absorb for a minute.
- Apply the moisturizer on slightly damp skin to help it lock in moisture better. This keeps your combination skin balanced.
- Avoid the eye area when applying the moisturizer. Do a patch test before your first use.
- Video: https://storage.pora.ai/2f72f5d69f07beeafc30237f829efbff.mp4

## Questions and answers

### What makes COSRX The 6 Peptide Skin Booster Serum a great fit for combination skin?

This serum is a great fit for your combination skin because niacinamide and peptides help control oily shine and improve skin texture. It also delivers deep moisture and smooths fine lines while keeping your skin calm and safe from irritation.
Sources: [Skin Research and Technology, 2026](https://pubmed.ncbi.nlm.nih.gov/42573538/), [Antioxidants, 2021](https://pubmed.ncbi.nlm.nih.gov/34439563/)

### Which ingredients make this serum a good fit for combination skin?

This serum is a great fit for combination skin because it includes niacinamide to control oily shine and multiple peptides like copper tripeptide-1 to smooth texture and hydrate dry areas. These ingredients work well together to keep your skin balanced and plump without causing irritation.
Sources: [Skin Research and Technology, 2026](https://pubmed.ncbi.nlm.nih.gov/42573538/), [Antioxidants, 2021](https://pubmed.ncbi.nlm.nih.gov/34439563/)

### What does Hyaluronic Acid do for combination skin?

Hyaluronic acid is a great fit for combination skin because it quenches dry areas with a boost of hydration while keeping oily zones balanced. Regular use helps smooth out fine lines and makes your skin feel soft and plump without causing irritation.
Sources: [Dermatology and Therapy, 2021](https://pubmed.ncbi.nlm.nih.gov/34176098/), [Journal of Drugs in Dermatology, 2011](https://pubmed.ncbi.nlm.nih.gov/22052267/)

### What do Peptides do for combination skin?

Peptides help combination skin by keeping it smooth, supporting firmness, and boosting hydration. They also help reduce the appearance of lines and encourage skin repair, though absorption depends on the formula.
Sources: [International Journal of Molecular Sciences, 2025](https://pubmed.ncbi.nlm.nih.gov/40565185/), [Food & Function, 2019](https://pubmed.ncbi.nlm.nih.gov/31497829/)

### Where does this serum go in a skincare routine for combination skin?

This serum goes in the evening routine after cleansing and before moisturizing, though some serums can also be used in the morning. This routine step helps deliver active ingredients effectively while keeping your skin calm and safe from sun exposure.

### Can I use this serum with retinol, and in what order?

Yes, you can use this serum with retinol, applying this treatment first and following with your retinol. Using a moisturizing treatment with barrier-enhancing ingredients helps reduce irritation and supports your skin while using strong active ingredients.
Sources: [Cutis, 2006](https://pubmed.ncbi.nlm.nih.gov/17121065/), [Antioxidants, 2021](https://pubmed.ncbi.nlm.nih.gov/34439563/)

### How often should I use this serum?

You can use this serum in the evening as part of your routine, and some formulas may also be used in the morning or twice a day. This gentle product is unlikely to cause irritation and helps keep combination skin smooth and balanced.
Sources: [Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/32141711/), [Antioxidants, 2021](https://pubmed.ncbi.nlm.nih.gov/34439563/)

### Can this serum clog pores, cause breakouts or purging for combination skin?

This serum is unlikely to cause breakouts or clog pores on combination skin, as reviewers rarely report this issue and the formula contains no harsh ingredients. It helps control oily shine while keeping your skin calm and smooth.
Sources: [Skin Research and Technology, 2026](https://pubmed.ncbi.nlm.nih.gov/42573538/), [Antioxidants, 2021](https://pubmed.ncbi.nlm.nih.gov/34439563/)

### Can I use this serum around the eyes or on my body?

You can safely use this serum around your eyes and on your body because its gentle formula is well tolerated. Because the skin around the eyes is much thinner than on the body, it benefits greatly from the soothing and hydrating ingredients found in this treatment.
Sources: [Surgical and Radiologic Anatomy, 2002](https://pubmed.ncbi.nlm.nih.gov/12375070/), [Skin Research and Technology, 2026](https://pubmed.ncbi.nlm.nih.gov/42573538/)

### Is this serum fragrance-free and alcohol-free?

Yes, it has no fragrance and no drying alcohol.

## Alternatives for combination skin

- [innisfree Green Tea Seed Hyaluronic Acid Hydrating Serum](https://lovi.care/skincare/fr/p/innisfree/green-tea-seed-hyaluronic-acid-hydrating-serum/for/combination-skin) — High fit — €29.00 at Amazon
- [Torriden DIVE-IN Low Molecular Hyaluronic Acid Serum](https://lovi.care/skincare/fr/p/torriden/dive-in-low-molecular-hyaluronic-acid-serum/for/combination-skin) — High fit — €22.00 at Amazon
- [Isntree Green Tea Fresh Serum](https://lovi.care/skincare/fr/p/isntree/green-tea-fresh-serum/for/combination-skin) — High fit — €12.56 at Amazon

## Pairs well with

- Cleanser: [Paula's Choice RESIST Perfectly Balanced Foaming Cleanser](https://lovi.care/skincare/fr/p/paula-s-choice/perfectly-balanced-foaming-cleanser/for/combination-skin) — Superior fit — €32.00 at Amazon
- Hydrating Toner: [Paula's Choice Pore-Reducing Toner](https://lovi.care/skincare/fr/p/paula-s-choice/skin-balancing-pore-reducing-toner/for/combination-skin) — Superior fit — €36.00 at Amazon
- Pre-Cleanser: [Shu Uemura Ultime8 Sublime Beauty Cleansing Oil](https://lovi.care/skincare/fr/p/shu-uemura/ultime8-sublime-beauty-cleansing-oil/for/combination-skin) — Superior fit — €40.00 at Amazon

## Where to buy

- Amazon.fr: €18.60 (https://www.amazon.fr/dp/B0CCJ3SRB9?tag=lovi-care-web-product06-21&linkCode=osi&th=1&psc=1)
- Lookfantastic: €23.29 (https://www.lookfantastic.fr/p/cosrx-the-6-peptide-skin-booster-serum-150ml/15212379/)
- Notino: €23.90 (https://www.notino.fr/cosrx/the-6-peptide-skin-booster-serum-serum-regenerant-et-raffermissant-pour-peaux-seches-a-sensibles/p-16246267/)
Prices checked 10 Oct – 6 Nov 2026.

## 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 Oil Soybean Oil, Hydrogenated Lecithin, Potassium Sorbate, Sodium Oleate
## About the Lovi Fit

Lovi: Unbiased, science-based skincare AI trained on real user outcomes.

Lovi calculates every fit score from the full ingredient list with brand-independent rules its dermatologists and cosmetic chemists build and review, and personalizes every pick with AI trained on the real results of millions of users. Lovi trains its fit score models on a proprietary dataset built from more than 10,000 expert-labeled products and more than 100,000 simulated examples, following an internally consistent methodology presented at Cosmoprof, AMWC, and Skin of Color Update. Levels from best to worst: Superior, High, Average, Low, Caution, Warning.

Behind this fit score: Nadia Kapleva, MS (Co-founder, Medical Director); Alexey Shagraev, PhD (Co-founder, CEO and CTO); Dr. Sofía Perea Pérez, MD, MSc (Medical Board); Aishani Shah, MD (Medical Board); Asya Zubkova, MS (Medical Board); Hanna Kurets, MD (Medical Board, Medical Advisor); Elina Nazarenko, MD (Medical Board); Victoria Derkova, MS (Medical Board).

Page built Nov 8, 2026.

More from Lovi: https://lovi.care/skincare/llms.txt

## This page in other countries

- United States: https://lovi.care/skincare/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin
- United Kingdom: https://lovi.care/skincare/uk/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin
- Ireland: https://lovi.care/skincare/ie/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin
- Germany: https://lovi.care/skincare/de/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin
- France: https://lovi.care/skincare/fr/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin (this page)
- Italy: https://lovi.care/skincare/it/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin
- Netherlands: https://lovi.care/skincare/nl/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin
- Spain: https://lovi.care/skincare/es/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin
- Canada: https://lovi.care/skincare/ca/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin
- Australia: https://lovi.care/skincare/au/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin
- Singapore: https://lovi.care/skincare/sg/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin
- Saudi Arabia: https://lovi.care/skincare/sa/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin
- United Arab Emirates: https://lovi.care/skincare/ae/p/cosrx/the-6-peptide-skin-booster-serum/for/combination-skin