# COSRX The 6 Peptide Skin Booster Serum for dry sensitive skin

**Lovi Fit: Superior fit for dry sensitive skin.**
Dry Skin Fit: High · Effectiveness: High · Safety: Excellent.

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

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

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

This fit is calculated for the concerns frequently associated with dry sensitive skin: flakiness, tightness, redness, fine lines, and wrinkles. For scores based on a full skin profile (12D face scan, goals, preferences), use the Lovi app.

One of the best moisturizers for dry sensitive skin.

## Why this fit

- Excellent for your dry and sensitive skin, this serum provides superior hydration and barrier support with glycerin, sodium hyaluronate, and betaine, which effectively attract and retain moisture to combat dryness and flakiness.
- The inclusion of acetyl hexapeptide-8 and copper tripeptide-1 offers significant anti-aging benefits by promoting skin plumping and minimizing fine lines, further enhancing your skin's youthful appearance.
- This formula is safe for your skin, as it contains soothing ingredients like niacinamide and tocopherol and avoids harsh or irritating components.

## Fit by skin type

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

- A single application of a moisturizing fluid containing hyaluronic acid 1%, glycerin 5%, and Centella asiatica stem cells extract significantly increased skin hydration by 29% and reduced transepidermal water loss at 24 hours compared to baseline and an untreated control site in twenty healthy women. ([Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/))
- Argireline treatment twice daily for 4 weeks produced a significant anti-wrinkle effect with 48.9% total efficacy and decreased skin roughness in Chinese subjects compared with 0% efficacy and no decrease in roughness in the placebo group. ([American Journal of Clinical Dermatology, 2013](https://pubmed.ncbi.nlm.nih.gov/23417317/))
- Treatment with cross-linked hyaluronic acid-based microneedle patches combined with acetyl hexapeptide-8 or epidermal growth factor significantly improved wrinkles and skin hydration compared to the patch alone in Korean females over 29 days. ([Annals of Dermatology, 2019](https://pubmed.ncbi.nlm.nih.gov/33911590/))
- Acetyl hexapeptide-3 and tripeptide-10 citrulline demonstrated antiwrinkle efficacy and decreased transepidermal water loss in twenty-four healthy volunteers compared to control groups, though synergistic effects between the two peptides remained unclear. ([Journal of Cosmetic Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28150423/))
- 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. Start using this moisturizer 3 times a week and move to daily use if your dry skin tolerates it well.
- Apply this moisturizer after cleansing and toner in the morning, or after your serum in the evening. Always pair it with SPF in the morning.
- Gently press a small amount of the moisturizer into your skin. Avoid rubbing it harshly to protect your sensitive skin.
- Apply the moisturizer on slightly damp skin to help with hydration absorption. This also works well for dry and flaky skin types.
- Do a patch test before your first use. Avoid the eye area to prevent any irritation.
- Video: https://storage.pora.ai/2f72f5d69f07beeafc30237f829efbff.mp4

## Questions and answers

### What makes COSRX The 6 Peptide Skin Booster Serum one of the best fits for dry sensitive skin?

This serum is a great fit because it helps quench dry and flaky skin with hydrating ingredients like sodium hyaluronate and glycerin, while soothing your skin with niacinamide and allantoin. It also features peptides that help smooth fine lines and keep your skin looking plump and soft.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/), [American Journal of Clinical Dermatology, 2013](https://pubmed.ncbi.nlm.nih.gov/23417317/)

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

This serum is a great fit for your dry sensitive skin because it contains glycerin, sodium hyaluronate, and betaine, which draw in and hold onto moisture to stop dryness and flakiness. It also features soothing ingredients like niacinamide and allantoin, along with peptides that help smooth fine lines without causing irritation.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/), [American Journal of Clinical Dermatology, 2013](https://pubmed.ncbi.nlm.nih.gov/23417317/)

### What does Hyaluronic Acid do for dry sensitive skin?

Hyaluronic acid is a great fit for dry, sensitive skin because it brings a large boost in hydration, making the skin feel soft and smooth while improving barrier function. It helps calm tightness and dryness, and is unlikely to cause irritation.
Sources: [Journal of Drugs in Dermatology, 2011](https://pubmed.ncbi.nlm.nih.gov/22052267/), [Dermatology and Therapy, 2021](https://pubmed.ncbi.nlm.nih.gov/34176098/)

### What do Peptides do for dry sensitive skin?

Peptides help hydrate dry sensitive skin while smoothing the look of fine lines and keeping the surface calm. They may also improve skin elasticity, though some types need enhanced delivery systems to deeply penetrate the skin barrier.
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 dry sensitive skin?

This serum goes in the evening routine after your toner and before your moisturizer. Putting it in the evening keeps things simple and gives you extra safety around sun exposure.

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

You can use this serum with retinol by applying the serum first to keep your skin hydrated and calm, followed by retinol once it absorbs. This routine helps reduce dryness and irritation while supporting your skin barrier.
Sources: [Cutis, 2006](https://pubmed.ncbi.nlm.nih.gov/17121065/), [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

### How often should I use this serum?

You can use this treatment in your evening routine, applying it after your toner and before your moisturizer. Daily use helps keep your skin hydrated and smooth while minimizing dryness and fine lines.
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 dry sensitive skin?

This serum is unlikely to clog pores or cause breakouts on dry sensitive skin, as it avoids harsh components and contains soothing ingredients like niacinamide. Reviewers rarely report breakouts from this formula, making it a safe choice for maintaining clear skin.

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

Yes, you can use this hydrating serum around the eyes and on your body to help smooth and soften dry skin. Its gentle formula and nourishing ingredients like sodium hyaluronate and glycerin absorb easily, making it well-suited for delicate areas without causing irritation.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

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

Yes, it has no fragrance and no drying alcohol.

## Alternatives for dry sensitive skin

- [COSRX Hydrium Triple Hyaluronic Moisture Ampoule](https://lovi.care/skincare/it/p/cosrx/hydrium-triple-hyaluronic-moisture-ampoule/for/dry-sensitive-skin) — Superior fit — €17.99 at Amazon
- [Torriden DIVE-IN Low Molecular Hyaluronic Acid Serum](https://lovi.care/skincare/it/p/torriden/dive-in-low-molecular-hyaluronic-acid-serum/for/dry-sensitive-skin) — High fit — €21.00 at Amazon
- [Kiehl's Midnight Recovery Concentrate](https://lovi.care/skincare/it/p/kiehl-s/midnight-recovery-concentrate/for/dry-sensitive-skin) — High fit — €52.00 at Amazon

## Pairs well with

- Cleanser: [CeraVe Hydrating Cleanser](https://lovi.care/skincare/it/p/cerave/hydrating-facial-cleanser/for/dry-sensitive-skin) — Superior fit — €9.19 at Amazon
- Soothing Toner: [Pixi Milky Tonic](https://lovi.care/skincare/it/p/pixi/milky-tonic/for/dry-sensitive-skin) — Superior fit — €30.10 at Amazon
- Moisturizer with Sun Protection: [d'Alba UVessence Mild Waterfull Sun Cream SPF 50](https://lovi.care/skincare/it/p/d-alba/uvessence-mild-waterfull-sun-cream-spf-50/for/dry-sensitive-skin) — Superior fit — €20.40 at Amazon

## Where to buy

- Amazon.it: €14.88 (https://www.amazon.it/dp/B0F32XPGRW?tag=lovi-care-web-product09-21&linkCode=osi&th=1&psc=1)
- Notino: €23.90 (https://www.notino.it/cosrx/the-6-peptide-skin-booster-serum-siero-rigenerante-e-rassodante-per-pelli-secche-e-sensibili/p-16246267/)
- Lookfantastic: €31.05 (https://www.lookfantastic.it/p/cosrx-the-6-peptide-skin-booster-serum-150ml/15212379/)
Prices checked 10 Oct – 26 Oct 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/dry-sensitive-skin
- United Kingdom: https://lovi.care/skincare/uk/p/cosrx/the-6-peptide-skin-booster-serum/for/dry-sensitive-skin
- Ireland: https://lovi.care/skincare/ie/p/cosrx/the-6-peptide-skin-booster-serum/for/dry-sensitive-skin
- Germany: https://lovi.care/skincare/de/p/cosrx/the-6-peptide-skin-booster-serum/for/dry-sensitive-skin
- France: https://lovi.care/skincare/fr/p/cosrx/the-6-peptide-skin-booster-serum/for/dry-sensitive-skin
- Italy: https://lovi.care/skincare/it/p/cosrx/the-6-peptide-skin-booster-serum/for/dry-sensitive-skin (this page)
- Netherlands: https://lovi.care/skincare/nl/p/cosrx/the-6-peptide-skin-booster-serum/for/dry-sensitive-skin
- Spain: https://lovi.care/skincare/es/p/cosrx/the-6-peptide-skin-booster-serum/for/dry-sensitive-skin
- Canada: https://lovi.care/skincare/ca/p/cosrx/the-6-peptide-skin-booster-serum/for/dry-sensitive-skin
- Australia: https://lovi.care/skincare/au/p/cosrx/the-6-peptide-skin-booster-serum/for/dry-sensitive-skin
- Singapore: https://lovi.care/skincare/sg/p/cosrx/the-6-peptide-skin-booster-serum/for/dry-sensitive-skin
- Saudi Arabia: https://lovi.care/skincare/sa/p/cosrx/the-6-peptide-skin-booster-serum/for/dry-sensitive-skin
- United Arab Emirates: https://lovi.care/skincare/ae/p/cosrx/the-6-peptide-skin-booster-serum/for/dry-sensitive-skin