# The INKEY List ECTOIN HYDRO-BARRIER SERUM for acne-prone skin

**Lovi Fit: Average fit for acne-prone skin.**
Combination Skin Fit: High · Effectiveness: Average · Safety: High.

Page: https://lovi.care/skincare/fr/p/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin

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

Brand: [The INKEY List](https://lovi.care/skincare/fr/brands/the-inkey-list)
Category: [Moisturizers and moisturizing serums](https://lovi.care/skincare/fr/best/moisturizers)

This fit is calculated for the concerns frequently associated with acne-prone skin: breakouts, blackheads, and post-acne marks. For scores based on a full skin profile (12D face scan, goals, preferences), use the Lovi app.

Works for acne-prone skin; other moisturizers fit it better.

## Why this fit

- Offers moderate moisturizing for your combination skin, as glycerin and ectoin hydrate and enhance barrier resilience without causing irritation.
- The inclusion of hyaluronic acid provides general skincare benefits supportive for acne-prone skin, though it does not directly target blemishes and breakouts.
- The product is safe for your combination 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/fr/p/the-inkey-list/ectoin-hydro-barrier-serum/for/oily-skin): Low
- [Dry skin](https://lovi.care/skincare/fr/p/the-inkey-list/ectoin-hydro-barrier-serum/for/dry-skin): Average
- [Combination skin](https://lovi.care/skincare/fr/p/the-inkey-list/ectoin-hydro-barrier-serum/for/combination-skin): Low
- [Sensitive skin](https://lovi.care/skincare/fr/p/the-inkey-list/ectoin-hydro-barrier-serum/for/sensitive-skin): Average
- [Acne-prone skin](https://lovi.care/skincare/fr/p/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin): Average (this page)
- [Skin with dark spots](https://lovi.care/skincare/fr/p/the-inkey-list/ectoin-hydro-barrier-serum/for/dark-spots): Average
- [Mature skin](https://lovi.care/skincare/fr/p/the-inkey-list/ectoin-hydro-barrier-serum/for/mature-skin): Average
- [Dry sensitive skin](https://lovi.care/skincare/fr/p/the-inkey-list/ectoin-hydro-barrier-serum/for/dry-sensitive-skin): Average
- [Oily acne-prone skin](https://lovi.care/skincare/fr/p/the-inkey-list/ectoin-hydro-barrier-serum/for/oily-acne-prone-skin): Average

## Key ingredients

Ectoin, Hyaluronic Acid, Glycerin

## 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/))
- Combining ectoine and mannitol with UV filters significantly improved protection of squalene oxidation, catalase activity, and trans-UCA compared to UV filters alone in 10 subjects on irradiated areas. ([Journal of Cosmetic Dermatology, 2024](https://pubmed.ncbi.nlm.nih.gov/37539499/))
- Topical 7% ectoine during serial 1064-nm Nd:YAG laser therapy produced a greater reduction in skin erythema, improved stratum corneum hydration, reduced transepidermal water loss, and decreased low-echogenic pixels in thirty participants compared to a vehicle control. ([Biomedicines, 2026](https://pubmed.ncbi.nlm.nih.gov/42792808/))
- Regular application of a novel anti-ageing cream containing hyaluronic acid, ectoin, and botanical actives significantly reduced wrinkle depth and length in the periorbital area while demonstrating very good skin tolerance. ([Polymers, 2023](https://pubmed.ncbi.nlm.nih.gov/37896378/))
- 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/))
- The emollient V0034CR significantly reduced TEWL compared to vehicle and vehicle plus glycerol, and significantly increased corneometry scores compared to vehicle and vehicle plus petrolatum in healthy volunteers with dry skin, demonstrating combined barrier function improvement from petrolatum and hydration improvement from glycerol. ([Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31532576/))
- Ten days of treatment with a cream containing 20% glycerin significantly increased skin hydration measured by corneometer values in 17 healthy volunteers compared to a placebo cream, but showed no influence on transepidermal water loss or skin sensitivity to an irritating surfactant. ([International Journal of Cosmetic Science, 2001](https://pubmed.ncbi.nlm.nih.gov/18498456/))
- Niacinamide/glycerin body moisturizers provided better rapid and prolonged improvement of cosmetic xerosis through functional improvement of stratum corneum barrier function compared to no treatment and conventional moisturizers in female subjects. ([Journal of Drugs in Dermatology, 2012](https://pubmed.ncbi.nlm.nih.gov/22206073/))

## Why other moisturizers fit acne-prone skin better

- Gluconolactone 14% solution significantly improved mild to moderate acne by reducing inflamed and non-inflamed lesions similarly to 5% benzoyl peroxide, but with fewer side-effects in 150 patients. ([The Australasian Journal of Dermatology, 1992](https://pubmed.ncbi.nlm.nih.gov/1303072/))
- Co-delivery of paeonol and madecassoside via nanoemulsions improved transdermal delivery, promoted barrier repair proteins, inhibited inflammatory cytokine secretion in cellular and 3D models, and reduced transepidermal water loss and acne in human facial skin compared to free components. ([Molecules, 2023](https://pubmed.ncbi.nlm.nih.gov/37446936/))

## What reviewers say

Users with dehydrated, dry, and sensitive skin frequently praise this serum for its ability to repair the skin barrier and soothe irritation, particularly from retinoid use or cold weather. While some users found it lacked immediate "watery" hydration, the majority reported long-term improvements in skin texture, redness reduction, and a plump, healthy glow.

- Liked: Soothing and barrier repair (mostly mentioned)
- Liked: Hydration and plumping (often mentioned)
- Liked: Lightweight texture (often mentioned)
- Liked: Makeup compatibility (sometimes noted)
- Disliked: Unpleasant scent (sometimes noted)
- Disliked: Breakouts or reactions (rarely noted)
- Disliked: Lack of instant hydration (rarely noted)
- Disliked: Pilling issues (rarely noted)

## How to apply

- Use your moisturizer twice a day in your AM and PM routines. Apply it daily to help keep breakouts under control.
- Apply after your cleanser and toner, and make sure to use your SPF right after in the morning.
- Gently spread a small amount of moisturizer over your face using soft motions. Let it absorb into the skin for a minute before getting dressed or applying makeup.
- Apply on slightly damp skin to help lock in extra moisture. This keeps your combination skin balanced without feeling heavy.
- Avoid the eye area and do a patch test before your first use. Stop using if you feel any irritation.
- Video: https://storage.pora.ai/2f72f5d69f07beeafc30237f829efbff.mp4

## Questions and answers

### How well does The Inkey List Ectoin Hydro-Barrier Serum work for acne-prone skin?

This serum works moderately well for acne-prone skin, as glycerin and ectoin hydrate and strengthen your skin barrier without causing irritation. While it is safe and provides general hydration, it does not directly target breakouts. An ideal product for this skin needs ingredients like niacinamide or Centella Asiatica to address blemishes while keeping oiliness in check.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

### Which ingredients make this serum a good fit for acne-prone skin?

Glycerin, ectoin, and hyaluronic acid make this serum a good fit by hydrating and strengthening your skin barrier without causing irritation. However, a top-rated product for this skin needs ingredients like niacinamide, peptides, or centella asiatica to directly target breakouts and provide deeper care.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

### What does Ectoin do for acne-prone skin?

Ectoin helps acne-prone skin by acting as a protective agent that calms irritation and strengthens the skin barrier. It is unlikely to clog pores and may help keep skin smooth and comfortable while you manage breakouts. Acne-prone skin of this type needs lightweight hydrators and soothing ingredients to balance moisture without feeling heavy or greasy.
Sources: [Clinics in Dermatology, 2008](https://pubmed.ncbi.nlm.nih.gov/18691511/), [Arhiv Za Higijenu Rada I Toksikologiju, 2016](https://pubmed.ncbi.nlm.nih.gov/28033102/)

### What does Hyaluronic Acid do for acne-prone skin?

Hyaluronic acid helps acne-prone skin by soothing irritation, calming redness, and keeping the skin balanced without clogging pores. When combined with targeted ingredients like zinc oxide, it may also help reduce breakouts.
Sources: [Biomedicines, 2025](https://pubmed.ncbi.nlm.nih.gov/41007718/), [Drug Delivery, 2017](https://pubmed.ncbi.nlm.nih.gov/28155509/)

### Where does this serum go in a skincare routine for acne-prone skin?

This serum goes in the evening routine after cleansing and before moisturizing, though acne-prone skin also needs targeted blemish-fighting ingredients to work well.

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

You can use this serum with retinol by applying it before your retinol to keep your skin calm and hydrated. Barrier-supporting ingredients like glycerin and ectoin help reduce the dryness and irritation often caused by strong acne treatments.
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 serum daily in your evening routine, as treatments fit best at night for simplicity and extra safety around sun exposure. Daily application helps keep acne-prone skin hydrated without clogging pores. An acne-prone skin type also needs targeted blemish-fighting ingredients to help clear breakouts.
Sources: [Health Science Reports, 2021](https://pubmed.ncbi.nlm.nih.gov/34141902/), [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

### Can this serum clog pores, cause breakouts or purging for acne-prone skin?

This serum is unlikely to clog pores or cause breakouts for acne-prone skin because it avoids harsh ingredients that trigger irritation, though it does not directly target blemishes. Acne-prone skin often does better with a targeted formula that includes acne-fighting ingredients like salicylic acid or niacinamide to help keep pores clear.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

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

You can safely use this moisturizing treatment around the eyes and on the body because its gentle formula is unlikely to cause irritation. To properly care for acne-prone skin, a product of this type needs soothing and hydrating ingredients like ectoin and glycerin alongside blemish-fighting additions.
Sources: [Surgical and Radiologic Anatomy, 2002](https://pubmed.ncbi.nlm.nih.gov/12375070/), [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 acne-prone skin

- [MEDI-PEEL Peptide 9 Volume White Cica All-in-one Essence](https://lovi.care/skincare/fr/p/medi-peel/peptide-9-volume-white-cica-all-in-one-essence/for/acne-prone-skin) — High fit — €27.80 at Amazon
- [COSRX Hydrium Triple Hyaluronic Moisture Ampoule](https://lovi.care/skincare/fr/p/cosrx/hydrium-triple-hyaluronic-moisture-ampoule/for/acne-prone-skin) — High fit — €17.99 at Amazon
- [MISSHA Super Aqua Ultra Hyalron Ampoule](https://lovi.care/skincare/fr/p/missha/super-aqua-ultra-hyalron-ampoule/for/acne-prone-skin) — Average fit — €26.77 at Amazon

## Pairs well with

- Cleanser: [B.LAB Matcha Hydrating Foam Cleanser](https://lovi.care/skincare/fr/p/b-lab/matcha-hydrating-foam-cleanser/for/acne-prone-skin) — Superior fit — €13.98 at Amazon
- Hydrating Toner: [La Mer The Tonic](https://lovi.care/skincare/fr/p/la-mer/the-tonic/for/acne-prone-skin) — Superior fit — €10.25 at Amazon
- SPF: [d'Alba Piedmont Waterfull Mild Sunscreen](https://lovi.care/skincare/fr/p/d-alba/piedmont-waterfull-mild-sunscreen/for/acne-prone-skin) — Superior fit — €16.99 at Amazon

## Where to buy

- Amazon.fr: €13.55 (https://www.amazon.fr/dp/B0DTV3VB8B?tag=lovi-care-web-product06-21&linkCode=osi&th=1&psc=1)
- Lookfantastic: €12.94 (https://www.lookfantastic.fr/p/the-inkey-list-ectoin-hydro-barrier-serum-30ml/15752394/)
- Notino: €14.50 (https://www.notino.fr/the-inkey-list/ectoin-hydro-barrier-serum-serum-hydratant-visage/p-16359304/)
Prices checked 10 Oct – 5 Nov 2026.

## Ingredients

Water, Glycerin, Propanediol, Betaine, Ectoin, Hyaluronic Acid, Pentylene Glycol, 1,2-Hexanediol, Caprylyl Glycol, Citric Acid, Sodium Citrate, 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/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin
- United Kingdom: https://lovi.care/skincare/uk/p/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin
- Ireland: https://lovi.care/skincare/ie/p/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin
- Germany: https://lovi.care/skincare/de/p/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin
- France: https://lovi.care/skincare/fr/p/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin (this page)
- Italy: https://lovi.care/skincare/it/p/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin
- Netherlands: https://lovi.care/skincare/nl/p/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin
- Spain: https://lovi.care/skincare/es/p/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin
- Canada: https://lovi.care/skincare/ca/p/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin
- Australia: https://lovi.care/skincare/au/p/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin
- Singapore: https://lovi.care/skincare/sg/p/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin
- Saudi Arabia: https://lovi.care/skincare/sa/p/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin
- United Arab Emirates: https://lovi.care/skincare/ae/p/the-inkey-list/ectoin-hydro-barrier-serum/for/acne-prone-skin