# COSRX The Vitamin C 23 Serum for dry sensitive skin

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

Page: https://lovi.care/skincare/it/p/cosrx/the-vitamin-c-23-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: [Serums and treatments](https://lovi.care/skincare/it/best/serums)

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.

Works for dry sensitive skin; other serums fit it better.

## Why this fit

- Offers moderate brightening for your dry and sensitive skin due to the presence of Ascorbic Acid and 3-O-Ethyl Ascorbic Acid, which help to even skin tone. Squalane and Sodium Hyaluronate provide emollient and humectant actions, respectively, making it highly suitable for dry skin.
- While the serum offers general hydration and soothing benefits, it lacks specialized ingredients to directly target dryness and flakiness, which are your main concerns.
- The product is safe for your dry and sensitive skin, with no risks of irritation due to the absence of prohibited or harsh ingredients.

## Fit by skin type

- [Oily skin](https://lovi.care/skincare/it/p/cosrx/the-vitamin-c-23-serum/for/oily-skin): Average
- [Dry skin](https://lovi.care/skincare/it/p/cosrx/the-vitamin-c-23-serum/for/dry-skin): Average
- [Combination skin](https://lovi.care/skincare/it/p/cosrx/the-vitamin-c-23-serum/for/combination-skin): Average
- [Sensitive skin](https://lovi.care/skincare/it/p/cosrx/the-vitamin-c-23-serum/for/sensitive-skin): High
- [Acne-prone skin](https://lovi.care/skincare/it/p/cosrx/the-vitamin-c-23-serum/for/acne-prone-skin): Average
- [Skin with dark spots](https://lovi.care/skincare/it/p/cosrx/the-vitamin-c-23-serum/for/dark-spots): High
- [Mature skin](https://lovi.care/skincare/it/p/cosrx/the-vitamin-c-23-serum/for/mature-skin): Low
- [Dry sensitive skin](https://lovi.care/skincare/it/p/cosrx/the-vitamin-c-23-serum/for/dry-sensitive-skin): Average (this page)
- [Oily acne-prone skin](https://lovi.care/skincare/it/p/cosrx/the-vitamin-c-23-serum/for/oily-acne-prone-skin): High

## Key ingredients

Ascorbic Acid, Sodium Hyaluronate, Tocopherol Vitamin E, Squalane, Niacinamide

## What the research says

- A topical serum containing vitamin C, vitamin E, and raspberry leaf cell culture extract improved skin color, elasticity, radiance, smoothness, scaliness, and wrinkles compared to the untreated contralateral side in fifty female volunteers. ([Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31975502/))
- A multi-component dissolving microneedle patch loaded with glabridin, 3-O-ethyl-L-ascorbic acid, and tranexamic acid effectively reduced chloasma and age spots while demonstrating safety in clinical evaluation, alongside significant antioxidant, anti-tyrosinase, and melanin-reduction effects in vitro and in vivo. ([Polymers, 2023](https://pubmed.ncbi.nlm.nih.gov/37571190/))
- Topical application of 5% vitamin C cream significantly improved global clinical scores, increased skin microrelief density, and induced elastic tissue repair in photoaged skin compared to excipient control in healthy female volunteers. ([Experimental Dermatology, 2003](https://pubmed.ncbi.nlm.nih.gov/12823436/))
- Ascorbic acid 2-glucoside gel significantly reduced gingival melanin pigmentation after 4 weeks compared to placebo in 73 subjects with symmetric pigmentation. ([Journal of Periodontology, 2009](https://pubmed.ncbi.nlm.nih.gov/19186973/))
- Topical application of VC-IP cream twice daily for 8 weeks reduces periorbital wrinkles in female subjects compared to a placebo cream. ([Journal of Cosmetic Dermatology, 2022](https://pubmed.ncbi.nlm.nih.gov/34910367/))
- 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 application of an antioxidant serum containing 15% ascorbic acid, 0.5% ferulic acid, and 1% tocopherol prevented particulate matter-induced degradation of extracellular matrix components, inflammation, and oxidative stress in the skin of 15 female volunteers compared to untreated controls. ([Journal of Cosmetic Dermatology, 2025](https://pubmed.ncbi.nlm.nih.gov/40642809/))
- Dermatological products containing d-alpha tocopheryl acetate showed non-comedogenic potential with less than a 50% increase in microcomedones in 12 healthy male subjects compared to octyl palmitate. ([Contemporary Clinical Trials Communications, 2021](https://pubmed.ncbi.nlm.nih.gov/34471722/))
- Topical application of an antioxidant mix containing 15% ascorbic acid, 0.5% ferulic acid, and 1% tocopherol prevented PM and UV-induced skin barrier perturbation, lipid peroxidation, inflammatory markers, MMP9 activation, and Type I collagen loss in 15 healthy females compared to untreated exposed skin. ([Journal of Cosmetic Dermatology, 2024](https://pubmed.ncbi.nlm.nih.gov/38590207/))
- Squalane at 0.005-0.015% counteracts UVA-induced oxidative stress, inflammation, and collagen metabolism inhibition while stimulating fibroblast migration in human dermal fibroblasts. ([Molecules, 2025](https://pubmed.ncbi.nlm.nih.gov/40363772/))
- Plant-derived squalane protected human dermal fibroblasts against UVA-induced damage by counteracting ROS formation, suppressing apoptosis-related proteins p53, caspase-3, caspase-9, and PARP, and restoring the pro-survival p-Akt/mTOR pathway. ([Antioxidants, 2025](https://pubmed.ncbi.nlm.nih.gov/40722956/))
- 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/))

## Why other serums fit dry sensitive skin better

- A formulation containing glycerol (5%) and xylitol (5%) applied twice daily for 14 days increased skin hydration, filaggrin protein quantity, interdigitation index, and biomechanical properties, and decreased transepidermal water loss compared to untreated and vehicle-treated skin in twelve volunteers with dry skin. ([Acta Dermato-venereologica, 2017](https://pubmed.ncbi.nlm.nih.gov/27349297/))
- Glycerol accelerates barrier repair and improves stratum corneum hydration compared to untreated and base-treated sites. ([Acta Dermato-venereologica, 1999](https://pubmed.ncbi.nlm.nih.gov/10598752/))
- In 50 participants with sensitive skin, a Ceramide NP C15-containing emollient improved skin barrier function with a significant reduction in transepidermal water loss and induced modest changes in skin microbiota compared to the vehicle. ([Skin Pharmacology and Physiology, 2026](https://pubmed.ncbi.nlm.nih.gov/41758783/))

## What reviewers say

Based on a very large amount of data, users frequently praise this serum for its potent ability to brighten dull complexions and fade stubborn acne scars, often noting visible results within a few weeks. The high 23% concentration can be irritating for sensitive skin, and many users dislike the sticky texture and strong scent.

- Liked: Brightens skin (mostly mentioned)
- Liked: Fades scars (mostly mentioned)
- Disliked: Unpleasant smell (mostly mentioned)
- Liked: Affordable price (often mentioned)
- Disliked: Sticky texture (often mentioned)
- Liked: Fast absorption (sometimes noted)
- Liked: Hydrating formula (sometimes noted)
- Disliked: Oxidation issues (sometimes noted)
- Disliked: Skin irritation (sometimes noted)
- Disliked: Poor packaging (rarely noted)

## How to apply

- Use this PM routine for your evening skincare. Start using the serum 3 times a week and increase to daily use if your skin feels comfortable.
- Apply the serum after cleansing and toner, but right before your moisturizer. This step locks in deep hydration for dry skin.
- Gently press 2-3 drops of the serum into your skin using your palms. Let it absorb completely for a minute ⏱ before applying your next product.
- Since your skin is sensitive, apply the serum on completely dry skin for better tolerance and less irritation.
- Avoid the sensitive eye area during application. Always do a patch test before your first use to ensure your skin reacts well.
- Video: https://storage.pora.ai/c879dda8655a61c19d3d8c9ebad6b06d.mp4

## Questions and answers

### How well does COSRX Vitamin C 23 work for dry sensitive skin?

This serum works moderately well for dry sensitive skin by brightening your tone, but it lacks targeted ingredients for deep dryness and flakiness. A product of this type needs rich moisturizing ingredients, ceramides, and barrier-supporting components to fully nourish and protect dry skin.
Sources: [Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31975502/)

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

This serum fits your dry and sensitive skin because it contains squalane and sodium hyaluronate to lock in moisture, along with vitamin C to brighten your skin tone safely. To work even better for this skin type, a product like this needs extra barrier-supporting ingredients like ceramides and richer soothing components to directly target dryness and flakiness.
Sources: [Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31975502/), [Polymers, 2023](https://pubmed.ncbi.nlm.nih.gov/37571190/)

### What does Vitamin C do for dry sensitive skin?

Vitamin C helps brighten and smooth dry sensitive skin while reducing wrinkles and improving elasticity. It is generally well tolerated and unlikely to cause irritation when properly formulated, leaving the skin looking more radiant.
Sources: [Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31975502/), [Antioxidants, 2024](https://pubmed.ncbi.nlm.nih.gov/38397772/)

### 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/)

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

This treatment goes in the evening routine after your soothing toner and before your moisturizer. A product of this type needs rich moisturizing ingredients like ceramides and plant oils to soothe and directly target dry and flaky areas.

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

You can use this serum with retinol, but it is best to apply retinol in the evening and vitamin C in the morning to avoid irritation on dry and sensitive skin. Using them at different times of day helps your skin stay calm while still getting the brightening and anti-aging benefits.

### How often should I use this serum?

You can use this serum in your evening routine once a day or a few times a week, as it is safe for your dry and sensitive skin. To better care for dry skin, this type of product also needs richer moisturizing ingredients to directly target dryness and flakiness.
Sources: [Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31975502/)

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

This serum is unlikely to cause breakouts or clog pores on dry sensitive skin, as it contains no heavy or harsh pore-clogging ingredients. However, it may cause moderate irritation for some people due to its active formula.

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

It has no fragrance and contains drying alcohol (alcohol denat).

## Alternatives for dry sensitive skin

- [SkinCeuticals C E Ferulic](https://lovi.care/skincare/it/p/skinceuticals/c-e-ferulic/for/dry-sensitive-skin) — Superior fit — €129.99 at Amazon
- [Paula's Choice RESIST Super Antioxidant Concentrate Serum](https://lovi.care/skincare/it/p/paula-s-choice/resist-super-antioxidant-concentrate-serum/for/dry-sensitive-skin) — Superior fit — €57.00 at Amazon
- [Augustinus Bader The Serum](https://lovi.care/skincare/it/p/augustinus-bader/the-serum/for/dry-sensitive-skin) — Superior fit — €380.10 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: €23.06 (https://www.amazon.it/dp/B0FWQGLTQV?tag=lovi-care-web-product09-21&linkCode=osi&th=1&psc=1)
Prices checked 6 Nov 2026.

## Ingredients

Water, Ascorbic Acid, Propanediol, Dimethicone, Tromethamine, Panthenol, 3-O-Ethyl Ascorbic Acid, Squalane, Caffeine, Sodium Chloride, Sodium Hyaluronate, Sodium Sulfite, Disodium Edta, Glutathione, Adenosine, Acetyl Glucosamine, Gardenia Florida Fruit Extract, Allantoin, Dextrin, Tocotrienols, Tocopherol, Palm Oil, Butylene Glycol, Arginine, Niacinamide, Pentylene Glycol, Alcohol Denat, Helianthus Annuus Seed Oil Sunflower Seed Oil, Glycyrrhiza Glabra Root Extract Licorice Root Extract, Methyl Trimethicone, Carthamus Tinctorius Seed Oil, Camellia Japonica Seed Oil, Daucus Carota Sativa Root Extract Carrot Root Extract, Beta-Carotene
## 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-vitamin-c-23-serum/for/dry-sensitive-skin
- United Kingdom: https://lovi.care/skincare/uk/p/cosrx/the-vitamin-c-23-serum/for/dry-sensitive-skin
- Ireland: https://lovi.care/skincare/ie/p/cosrx/the-vitamin-c-23-serum/for/dry-sensitive-skin
- Germany: https://lovi.care/skincare/de/p/cosrx/the-vitamin-c-23-serum/for/dry-sensitive-skin
- France: https://lovi.care/skincare/fr/p/cosrx/the-vitamin-c-23-serum/for/dry-sensitive-skin
- Italy: https://lovi.care/skincare/it/p/cosrx/the-vitamin-c-23-serum/for/dry-sensitive-skin (this page)
- Netherlands: https://lovi.care/skincare/nl/p/cosrx/the-vitamin-c-23-serum/for/dry-sensitive-skin
- Spain: https://lovi.care/skincare/es/p/cosrx/the-vitamin-c-23-serum/for/dry-sensitive-skin
- Canada: https://lovi.care/skincare/ca/p/cosrx/the-vitamin-c-23-serum/for/dry-sensitive-skin
- Australia: https://lovi.care/skincare/au/p/cosrx/the-vitamin-c-23-serum/for/dry-sensitive-skin
- Singapore: https://lovi.care/skincare/sg/p/cosrx/the-vitamin-c-23-serum/for/dry-sensitive-skin
- Saudi Arabia: https://lovi.care/skincare/sa/p/cosrx/the-vitamin-c-23-serum/for/dry-sensitive-skin
- United Arab Emirates: https://lovi.care/skincare/ae/p/cosrx/the-vitamin-c-23-serum/for/dry-sensitive-skin