# Allies of Skin 20% Vitamin C Brighten + Firm Serum for dry sensitive skin

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

Page: https://lovi.care/skincare/sg/p/allies-of-skin/20-vitamin-c-brighten-firm-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 Singapore.

Brand: [Allies of Skin](https://lovi.care/skincare/sg/brands/allies-of-skin)
Category: [Serums and treatments](https://lovi.care/skincare/sg/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.

A great choice for dry sensitive skin; a few serums fit it even better.

## Why this fit

- Offers excellent brightening and firming for your dry and sensitive skin, as 3-O-Ethyl Ascorbic Acid and Ergothioneine work to even skin tone and improve elasticity. Glycerin and Tocopherol provide essential hydration and antioxidant support, addressing your dry or flaky skin concerns.
- The formula is highly suitable for dry skin, with glycerin and propanediol acting as humectants to draw moisture, while tocopherol offers antioxidant protection.
- The safety profile is excellent, with no risks of irritation for your dry and sensitive skin due to the absence of prohibited or harsh ingredients.

## Fit by skin type

- [Oily skin](https://lovi.care/skincare/sg/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/oily-skin): Average
- [Dry skin](https://lovi.care/skincare/sg/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-skin): High
- [Combination skin](https://lovi.care/skincare/sg/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/combination-skin): High
- [Sensitive skin](https://lovi.care/skincare/sg/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/sensitive-skin): Low
- [Acne-prone skin](https://lovi.care/skincare/sg/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/acne-prone-skin): High
- [Skin with dark spots](https://lovi.care/skincare/sg/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dark-spots): Average
- [Mature skin](https://lovi.care/skincare/sg/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/mature-skin): Average
- [Dry sensitive skin](https://lovi.care/skincare/sg/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-sensitive-skin): High (this page)
- [Oily acne-prone skin](https://lovi.care/skincare/sg/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/oily-acne-prone-skin): High

## Key ingredients

Ethylated L-Ascorbic Acid, Glutathione, Citrus Aurantium Dulcis Callus Culture Extract, Acetyl Cysteine, Dimethylmethoxy Chromanol

## 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/))
- A triple combination of ergothioneine, collagen peptides, and sodium hyaluronate attenuated UV-induced skin damage ex vivo and improved facial skin hydration, elasticity, barrier function, and wrinkles in Chinese women. ([Frontiers in Nutrition, 2026](https://pubmed.ncbi.nlm.nih.gov/42698538/))
- Topical application of 1,3-propanediol at various concentrations, alone or combined with butylene glycol and/or glycerol, increased skin hydration and reduced trans epidermal water loss in 30 healthy female subjects over an 8-hour period, with the 15% concentration and the addition of glycerol providing greater benefits. ([International Journal of Cosmetic Science, 2024](https://pubmed.ncbi.nlm.nih.gov/37699769/))
- 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/))
- Glutathione amino acid precursors effectively increase cellular glutathione levels, reducing oxidative stress, ATP depletion, and DNA damage in human keratinocytes, clinical subjects, and ex vivo skin compared to controls. ([Journal of the European Academy of Dermatology and Venereology, 2024](https://pubmed.ncbi.nlm.nih.gov/38189670/))
- Topical oxidized glutathione significantly decreases the skin melanin index and improves moisture content, smoothness, wrinkle formation, and elasticity compared to placebo in healthy women. ([Clinical, Cosmetic and Investigational Dermatology, 2014](https://pubmed.ncbi.nlm.nih.gov/25378941/))
- Topical glutathione improves hyperpigmentation, reduces ultraviolet-induced erythema and wrinkles, decreases transepidermal water loss, and enhances antioxidant capacity. ([The Journal of Clinical and Aesthetic Dermatology, 2025](https://pubmed.ncbi.nlm.nih.gov/41416233/))
- Topical N-acetylcysteine plus doxycycline achieved significantly greater improvements in total lesion count, inflammatory lesion count, IGA, GAGS, and CADI scores compared to benzoyl peroxide plus doxycycline in 40 patients with moderate acne vulgaris. ([Dermatology Practical & Conceptual, 2026](https://pubmed.ncbi.nlm.nih.gov/42190184/))
- Topical application of alpha-tocopherol, l-ascorbic acid, alpha-lipoic acid, glutathione ethylester, and N-acetylcysteine decreased UVB-radiation-induced cell death, apoptosis, and lipid peroxidation in ex vivo pig skin explants compared to untreated controls. ([Radiation Research, 2003](https://pubmed.ncbi.nlm.nih.gov/12537526/))
- Topical vitamin C, vitamin E, and acetylcysteine showed similar effects on the healing of experimentally created corneal wounds in rabbits, with no statistically significant differences compared to each other. ([Indian Journal of Ophthalmology, 2020](https://pubmed.ncbi.nlm.nih.gov/33229673/))
- Supplementation of a broad-spectrum sunscreen with Spirulina and dimethylmethoxy chromanol significantly improved skin pigmentation, reduced collagen degradation, and enhanced net elasticity in 44 healthy subjects after 84 days compared to sunscreen alone. ([European Journal of Pharmaceutical Sciences, 2017](https://pubmed.ncbi.nlm.nih.gov/28341613/))

## What reviewers say

Users report this serum provides a noticeable glow and smoother skin texture, effectively brightening dullness and fading dark spots. Its waterless formula can feel sticky or oily if not applied to damp skin as instructed.

- Liked: Visible brightening and glow (mostly mentioned)
- Liked: Smoother skin texture (often mentioned)
- Disliked: Sticky or thick texture (often mentioned)
- Liked: Non-irritating for many (sometimes noted)
- Liked: Stable, potent formula (sometimes noted)
- Disliked: Application difficulty (sometimes noted)
- Disliked: High price point (sometimes noted)
- Disliked: Unpleasant smell (sometimes noted)
- Disliked: Sensitization or reactions (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

### What makes Allies of Skin 20% Vitamin C Brighten + Firm Serum a great fit for dry sensitive skin?

Allies of Skin 20% Vitamin C Brighten + Firm Serum is a great fit because it brightens and firms your dry and sensitive skin while delivering essential hydration with 3-O-Ethyl Ascorbic Acid, ergothioneine, glycerin, and tocopherol. The formula avoids harsh ingredients to ensure a very safe experience without irritation.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/), [Frontiers in Nutrition, 2026](https://pubmed.ncbi.nlm.nih.gov/42698538/)

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

This serum is a great fit because 3-O-Ethyl Ascorbic Acid and ergothioneine help brighten and smooth your skin while improving elasticity. Glycerin and propanediol draw in essential moisture to help calm dry areas, and tocopherol provides antioxidant support with little risk of irritation.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/), [Frontiers in Nutrition, 2026](https://pubmed.ncbi.nlm.nih.gov/42698538/)

### What does Ethylated L-Ascorbic Acid do for dry sensitive skin?

Ethylated L-Ascorbic Acid provides antioxidant protection to help calm dry sensitive skin against everyday stress. This ingredient helps keep your skin smooth and protected from damage.
Sources: [Journal of Cosmetic Dermatology, 2004](https://pubmed.ncbi.nlm.nih.gov/17147560/), [Skin Research and Technology, 2008](https://pubmed.ncbi.nlm.nih.gov/18211609/)

### What does Glutathione do for dry sensitive skin?

Glutathione helps improve moisture content and smoothness while reducing oxidative stress, making it a helpful option for dry sensitive skin. This ingredient may enhance hydration and elasticity while maintaining a gentle profile. To properly care for dry sensitive skin, a product of this type needs soothing and hydrating ingredients that support the skin barrier.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2014](https://pubmed.ncbi.nlm.nih.gov/25378941/), [Journal of the European Academy of Dermatology and Venereology, 2024](https://pubmed.ncbi.nlm.nih.gov/38189670/)

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

This serum goes in your evening routine after your toner and before your moisturizer. Putting it in the evening keeps things simple and helps avoid any extra sun sensitivity.

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

You can use this serum with retinol by applying the serum first in your evening routine and following with a moisturizer, as this helps protect dry and sensitive skin from irritation. It is unlikely to cause discomfort when you introduce both slowly.

### How often should I use this serum?

You can use this treatment in your evening routine, applying it after your cleanser and soothing toner and before your moisturizer. It is very safe for dry and sensitive skin and is unlikely to cause irritation.

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

This serum is unlikely to clog pores or cause breakouts for dry sensitive skin because it avoids harsh ingredients and features a safe formula. It may help keep your skin smooth and calm while improving firmness without irritation.

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

Yes, it has no fragrance and no drying alcohol.

## Alternatives for dry sensitive skin

- [Neogen Dermalogy Real Vitamin C Serum](https://lovi.care/skincare/sg/p/neogen-dermalogy/real-vitamin-c-serum/for/dry-sensitive-skin) — High fit — S$50.41 at Amazon
- [ma:nyo Bifida Biome Complex Ampoule](https://lovi.care/skincare/sg/p/ma-nyo/bifida-biome-complex-ampoule/for/dry-sensitive-skin) — High fit — S$40.09 at Amazon
- [PCA Skin C&E Advanced with Hexylresorcinol and Silymarin](https://lovi.care/skincare/sg/p/pca-skin/c-and-e-advanced/for/dry-sensitive-skin) — High fit — S$192.38 at Amazon

## Pairs well with

- Cleanser: [CeraVe Hydrating Cleanser](https://lovi.care/skincare/sg/p/cerave/hydrating-facial-cleanser/for/dry-sensitive-skin) — Superior fit — S$25.06 at Amazon
- Soothing Toner: [Mario Badescu Facial Spray with Aloe, Chamomile and Lavender](https://lovi.care/skincare/sg/p/mario-badescu/facial-spray-with-aloe-chamomile-and-lavender/for/dry-sensitive-skin) — High fit — S$34.52 at Amazon
- Moisturizer with Sun Protection: [Dr.G Green Mild Up Sun+](https://lovi.care/skincare/sg/p/dr-g/green-mild-up-sun/for/dry-sensitive-skin) — Superior fit — S$59.06 at Amazon

## Where to buy

No store in Singapore has a checked price for this product, so the page shows none.

## Ingredients

Propanediol, Glycerin, 3-O-Ethyl Ascorbic Acid, Benzimidazole Diamond Amidoethyl Urea Carbamoyl Propyl Polymethylsilsesquioxane, Dimethyl Isosorbide, Helianthus Annuus Wax Seed, Polyglyceryl-10 Tristearate, Ethoxydiglycol, Dicaprylyl Ether, Water, Caprylyl Glycol, Citrus Aurantium Dulcis Callus Culture Extract, Glutathione, Acetyl Cysteine, Dimethylmethoxy Chromanol, Ergothioneine, Tocopherol, Gluconolactone, Leuconostoc Radish Root Ferment Filtrate, Xanthan Gum, Silica, Sodium Benzoate, Calcium Gluconate, Phenoxyethanol
## 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/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-sensitive-skin
- United Kingdom: https://lovi.care/skincare/uk/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-sensitive-skin
- Ireland: https://lovi.care/skincare/ie/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-sensitive-skin
- Germany: https://lovi.care/skincare/de/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-sensitive-skin
- France: https://lovi.care/skincare/fr/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-sensitive-skin
- Italy: https://lovi.care/skincare/it/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-sensitive-skin
- Netherlands: https://lovi.care/skincare/nl/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-sensitive-skin
- Spain: https://lovi.care/skincare/es/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-sensitive-skin
- Canada: https://lovi.care/skincare/ca/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-sensitive-skin
- Australia: https://lovi.care/skincare/au/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-sensitive-skin
- Singapore: https://lovi.care/skincare/sg/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-sensitive-skin (this page)
- Saudi Arabia: https://lovi.care/skincare/sa/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-sensitive-skin
- United Arab Emirates: https://lovi.care/skincare/ae/p/allies-of-skin/20-vitamin-c-brighten-firm-serum/for/dry-sensitive-skin