# COSRX The 6 Peptide Skin Booster Serum for oily skin

**Lovi Fit: High fit for oily skin.**
Oily Skin Fit: High · Effectiveness: High · Safety: High.

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

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

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

This fit is calculated for the concerns frequently associated with oily skin: shine, enlarged pores, blackheads, and blemishes. For scores based on a full skin profile (12D face scan, goals, preferences), use the Lovi app.

One of the best moisturizers for oily skin.

## Why this fit

- Offers moderate benefits for oily shine on your oily skin due to the presence of niacinamide and acetyl hexapeptide-8, which help control sebum and improve skin texture.
- The serum also provides excellent moisturizing and anti-aging effects with copper tripeptide-1 and other peptides that plump and minimize fine lines.
- The safety profile is excellent, with no risks of irritation for your oily skin due to the absence of prohibited or harsh ingredients.

## Fit by skin type

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

- Could be used as part of your AM or PM routine every day to keep your face fresh.
- Apply this moisturizer after cleansing and toning, but right before your SPF in the morning.
- Gently press a small amount into your skin and let it absorb fully.
- Apply on clean, slightly dry skin to help control that oily shine.
- Avoid the eye area and do a quick 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 oily skin?

This serum is a great fit for oily skin because niacinamide and peptides help control shine and improve skin texture while providing light moisture. It is unlikely to cause irritation since it avoids harsh ingredients, making it safe for daily use.
Sources: [Skin Research and Technology, 2026](https://pubmed.ncbi.nlm.nih.gov/42573538/)

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

Niacinamide and acetyl hexapeptide-8 make this serum a great fit for oily skin by helping control oily shine and smoothing out skin texture. Copper Tripeptide-1 and other peptides also add great moisturizing and anti-aging effects that help keep your skin looking plump and smooth.
Sources: [Skin Research and Technology, 2026](https://pubmed.ncbi.nlm.nih.gov/42573538/)

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

Hyaluronic acid helps oily skin by reducing extra oil and sebum production without causing irritation. Clinical studies show it successfully balances oil levels while keeping the skin comfortable.
Sources: [The Journal of Investigative Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28163068/)

### What do Peptides do for oily skin?

Peptides help support skin health and may improve the look of oily skin, but this type of skin needs formulas with ingredients that balance oil production and keep pores clear.
Sources: [Advanced Science, 2025](https://pubmed.ncbi.nlm.nih.gov/39783908/), [International Journal of Molecular Sciences, 2025](https://pubmed.ncbi.nlm.nih.gov/40565185/)

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

This serum goes in the evening routine after cleansing and before your moisturizer. It is unlikely to cause irritation on oily skin.

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

Yes, you can use this serum with retinol by applying the serum first to hydrate and soothe your skin before adding your retinol product. This lightweight treatment is unlikely to cause irritation and helps improve texture while you use retinoids.

### How often should I use this serum?

You can use this serum in your evening routine as part of your regular regimen. Daily application helps keep your oily skin balanced and moisturized without any risk of irritation.
Sources: [Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/32141711/), [Health Science Reports, 2021](https://pubmed.ncbi.nlm.nih.gov/34141902/)

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

This serum is unlikely to cause breakouts on oily skin, as it has a very safe formula with no harsh or heavy ingredients that typically clog pores. Reviewers rarely report breakouts, and the lightweight texture helps keep oily skin calm and clear.

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

This moisturizing treatment is well-suited for the thin skin around the eyes and on the body because its gentle formula avoids harsh ingredients. It helps smooth fine lines in the eye area while keeping your skin calm, smooth, and comfortable.
Sources: [European Journal of Pharmaceutics and Biopharmaceutics, 2014](https://pubmed.ncbi.nlm.nih.gov/24056055/), [Polymers, 2023](https://pubmed.ncbi.nlm.nih.gov/37896378/)

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

Yes, it has no fragrance and no drying alcohol.

## Alternatives for oily skin

- [Elizavecca Witch Piggy Hell Pore Control Hyaluronic Acid 97%](https://lovi.care/skincare/p/elizavecca/witch-piggy-hell-pore-control-hyaluronic-acid-97/for/oily-skin) — High fit — $8.40 at Amazon
- [Isntree Green Tea Fresh Serum](https://lovi.care/skincare/p/isntree/green-tea-fresh-serum/for/oily-skin) — High fit — $17.90 at Amazon
- [innisfree Green Tea Seed Hyaluronic Acid Hydrating Serum](https://lovi.care/skincare/p/innisfree/green-tea-seed-hyaluronic-acid-hydrating-serum/for/oily-skin) — High fit — $30.00 at Amazon

## Pairs well with

- Cleanser: [CeraVe Foaming Facial Cleanser](https://lovi.care/skincare/p/cerave/foaming-facial-cleanser/for/oily-skin) — Superior fit — $15.97 at Amazon
- Hydrating Toner: [SOME BY MI Snail Truecica Miracle Repair Toner](https://lovi.care/skincare/p/some-by-mi/snail-truecica-miracle-repair-toner/for/oily-skin) — Superior fit — $15.60 at Amazon
- SPF: [CeraVe AM Facial Moisturizing Lotion](https://lovi.care/skincare/p/cerave/am-facial-moisturizing-lotion-spf-30/for/oily-skin) — Superior fit — $14.97 at Amazon

## Where to buy

- Amazon.com: $17.50 (https://www.amazon.com/dp/B0CCJ3SRB9?tag=lovi-care-web-product-20&linkCode=osi&th=1&psc=1)
Prices checked 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/oily-skin (this page)
- United Kingdom: https://lovi.care/skincare/uk/p/cosrx/the-6-peptide-skin-booster-serum/for/oily-skin
- Ireland: https://lovi.care/skincare/ie/p/cosrx/the-6-peptide-skin-booster-serum/for/oily-skin
- Germany: https://lovi.care/skincare/de/p/cosrx/the-6-peptide-skin-booster-serum/for/oily-skin
- France: https://lovi.care/skincare/fr/p/cosrx/the-6-peptide-skin-booster-serum/for/oily-skin
- Italy: https://lovi.care/skincare/it/p/cosrx/the-6-peptide-skin-booster-serum/for/oily-skin
- Netherlands: https://lovi.care/skincare/nl/p/cosrx/the-6-peptide-skin-booster-serum/for/oily-skin
- Spain: https://lovi.care/skincare/es/p/cosrx/the-6-peptide-skin-booster-serum/for/oily-skin
- Canada: https://lovi.care/skincare/ca/p/cosrx/the-6-peptide-skin-booster-serum/for/oily-skin
- Australia: https://lovi.care/skincare/au/p/cosrx/the-6-peptide-skin-booster-serum/for/oily-skin
- Singapore: https://lovi.care/skincare/sg/p/cosrx/the-6-peptide-skin-booster-serum/for/oily-skin
- Saudi Arabia: https://lovi.care/skincare/sa/p/cosrx/the-6-peptide-skin-booster-serum/for/oily-skin
- United Arab Emirates: https://lovi.care/skincare/ae/p/cosrx/the-6-peptide-skin-booster-serum/for/oily-skin