# Kiehl's Powerful-Strength Line-Reducing Concentrate for sensitive skin

**Lovi Fit: Average fit for sensitive skin.**
Normal Skin Fit: High · Effectiveness: Average · Safety: Excellent.

Page: https://lovi.care/skincare/uk/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/sensitive-skin

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

Brand: [Kiehl's](https://lovi.care/skincare/uk/brands/kiehl-s)
Category: [Serums and treatments](https://lovi.care/skincare/uk/best/serums)

This fit is calculated for the concerns frequently associated with sensitive skin: redness, stinging, and reactions to new products. For scores based on a full skin profile (12D face scan, goals, preferences), use the Lovi app.

Works for sensitive skin; other serums fit it better.

## Why this fit

- Offers moderate benefits for your normal skin, as Ascorbic Acid and Glycerin provide antioxidant and hydrating effects, though they do not specifically target your primary concerns of redness and irritation.
- The inclusion of Hydrolyzed Hyaluronic Acid offers additional hydration, which is beneficial for overall skin health.
- The product is safe for your sensitive skin, containing soothing ingredients and lacking harsh components.

## Fit by skin type

- [Oily skin](https://lovi.care/skincare/uk/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/oily-skin): Average
- [Dry skin](https://lovi.care/skincare/uk/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/dry-skin): Average
- [Combination skin](https://lovi.care/skincare/uk/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/combination-skin): High
- [Sensitive skin](https://lovi.care/skincare/uk/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/sensitive-skin): Average (this page)
- [Acne-prone skin](https://lovi.care/skincare/uk/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/acne-prone-skin): High
- [Skin with dark spots](https://lovi.care/skincare/uk/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/dark-spots): High
- [Mature skin](https://lovi.care/skincare/uk/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/mature-skin): Average
- [Dry sensitive skin](https://lovi.care/skincare/uk/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/dry-sensitive-skin): High
- [Oily acne-prone skin](https://lovi.care/skincare/uk/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/oily-acne-prone-skin): High

## Key ingredients

Ascorbic Acid, Sodium Hyaluronate, Ascorbyl Glucoside, Glycerin, Adenosine

## 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/))
- Profhilo gel combined with Dysport Botox significantly improved skin hydration, skin thickness, and GAIS scores compared to Dysport Botox injection alone in 19 participants seeking neck rejuvenation. ([Dermatologic Therapy, 2022](https://pubmed.ncbi.nlm.nih.gov/35775872/))
- Profhilo treatment led to significant improvements in superficial skin hydration and transepidermal water loss over time in Chinese females, while demonstrating good product tolerability. ([Aesthetic Plastic Surgery, 2026](https://pubmed.ncbi.nlm.nih.gov/40921777/))
- 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/))
- 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/))
- Topical adenosine treatment significantly increased the anagen hair growth rate and thick hair rate compared to placebo in Japanese women with female pattern hair loss over 12 months. ([The Journal of Dermatology, 2008](https://pubmed.ncbi.nlm.nih.gov/19239555/))
- Topical application of a disodium adenosine monophosphate-based formulation reduced wrinkles and hyperpigmentation while improving hydration, barrier function, skin lifting, and epidermal turnover in female participants. ([International Journal of Molecular Sciences, 2026](https://pubmed.ncbi.nlm.nih.gov/42278371/))
- Adenosine and cordycepin stimulate the Wnt/beta-catenin signaling pathway through adenosine receptor and PKA activation, promoting cell proliferation, migration, and growth factor secretion in cultured dermal fibroblasts. ([International Journal of Molecular Sciences, 2021](https://pubmed.ncbi.nlm.nih.gov/34070360/))

## Why other serums fit sensitive skin better

- Topical application of TAT-SOD significantly suppresses UVB-induced erythema formation, blood flow rise, and apoptotic sunburn cell formation in human volunteers compared to a vehicle control. ([European Journal of Pharmaceutics and Biopharmaceutics, 2016](https://pubmed.ncbi.nlm.nih.gov/27460952/))

## What reviewers say

Based on a very large amount of data, users frequently praise this serum for its high concentration of Vitamin C and Hyaluronic Acid, noting that it visibly brightens dull complexions and smooths skin texture almost immediately. While many appreciate the unique warming sensation and velvety finish, results on deep wrinkles vary, and the silicone-heavy formula can be polarizing for those with oily or acne-prone skin.

- Liked: Smoother skin (mostly mentioned)
- Liked: Visible brightening (often mentioned)
- Liked: Warming sensation (often mentioned)
- Liked: Fine line reduction (sometimes noted)
- Disliked: Greasy residue (sometimes noted)
- Disliked: Pills under makeup (sometimes noted)
- Disliked: Causes breakouts (rarely noted)
- Disliked: Unpleasant scent (rarely noted)

## How to apply

- Use your serum in the PM routine, starting 3 times a week before building up to daily use if your skin is happy.
- Apply the serum after cleansing and toning, but before putting on your moisturizer for the best results.
- Gently press 2-3 drops of the serum into your skin and wait a minute ⏱ for it to soak in.
- Since your skin is sensitive and easily irritated, apply the serum on completely dry skin to help keep it calm.
- Always do a patch test before your first use and avoid getting the serum too close to your eyes .
- Video: https://storage.pora.ai/c879dda8655a61c19d3d8c9ebad6b06d.mp4

## Questions and answers

### How well does Kiehl's Powerful-Strength Line-Reducing Concentrate work for sensitive skin?

This treatment works for your sensitive skin, though other products fit it better. It offers moderate hydration and antioxidant effects, but it does not specifically target redness and irritation. Treatments that fit sensitive skin better need ingredients that target redness and irritation while posing no risk of irritation.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

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

Ascorbic acid and glycerin help provide antioxidant and hydrating effects that work well for your sensitive skin, while sodium hyaluronate and hydrolyzed hyaluronic acid offer extra moisture for overall skin health. A product of this type needs ingredients that soothe redness and irritation without harsh components to be a truly great fit for this skin.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

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

Vitamin C helps brighten skin, smooth out fine lines, and fade dark spots. Clinical studies show it is generally safe and well-tolerated when improving overall skin quality.
Sources: [Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31975502/), [Journal of Cosmetic Dermatology, 2023](https://pubmed.ncbi.nlm.nih.gov/37128827/)

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

Hyaluronic acid helps calm and hydrate sensitive skin while supporting the skin barrier to keep it soft and comfortable. Clinical studies show it improves surface moisture and reduces dryness, roughness, and redness without irritation.
Sources: [Journal of Drugs in Dermatology, 2025](https://pubmed.ncbi.nlm.nih.gov/41037531/), [Journal of Cosmetic Dermatology, 2018](https://pubmed.ncbi.nlm.nih.gov/29356277/)

### Where does it go in a skincare routine for sensitive skin?

This treatment goes in your evening routine, after cleansing and toning and before moisturizing. A product of this type for sensitive skin needs calming and hydrating ingredients like centella asiatica, green tea, or ceramides to soothe redness and irritation.

### 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 retinol once your skin has adjusted. This combination is generally safe, though sensitive skin needs extra soothing ingredients and gentle hydrators to calm redness and irritation.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

### How often should I use it?

This treatment works well in the evening for your sensitive skin, though other products fit it better. To care for redness and irritation, this skin type needs gentle, hydrating ingredients and calming botanical extracts.

### Can it clog pores, cause breakouts or purging for sensitive skin?

It is unlikely to cause breakouts for sensitive skin, as complaints about breakouts are low. A product for this skin type needs soothing ingredients and calming plant extracts that reduce redness and irritation while keeping it soft.

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

It has no drying alcohol and contains fragrance (limonene and citral).

## Alternatives for sensitive skin

- [SkinCeuticals C E Ferulic](https://lovi.care/skincare/uk/p/skinceuticals/c-e-ferulic/for/sensitive-skin) — High fit — £143.35 at Amazon
- [Neogen Dermalogy Real Vitamin C Serum](https://lovi.care/skincare/uk/p/neogen-dermalogy/real-vitamin-c-serum/for/sensitive-skin) — High fit — £25.95 at Amazon
- [COSRX The Vitamin C 23 Serum](https://lovi.care/skincare/uk/p/cosrx/the-vitamin-c-23-serum/for/sensitive-skin) — High fit — £16.11 at Amazon

## Pairs well with

- Cleanser: [Fresh Soy Face Cleanser](https://lovi.care/skincare/uk/p/fresh/soy-face-cleanser/for/sensitive-skin) — Superior fit — £14.99 at Amazon
- Soothing Toner: [Clarins Toning Lotion with Camomile](https://lovi.care/skincare/uk/p/clarins/soothing-toning-lotion/for/sensitive-skin) — Superior fit — £17.91 at Amazon
- Moisturizer with Sun Protection: [Clinique Mineral Sunscreen Fluid for Face SPF 50](https://lovi.care/skincare/uk/p/clinique/broad-spectrum-spf-50-mineral-sunscreen-fluid-for-face/for/sensitive-skin) — Superior fit — £21.00 at Amazon

## Where to buy

- Lookfantastic: £55.25 (https://www.lookfantastic.com/p/kiehl-s-powerful-strength-line-reducing-concentrate-various-sizes/12916140/)
- Notino: £63.50 (https://www.notino.co.uk/kiehls/dermatologist-solutions-powerful-strength-line-reducing-concentrate-anti-wrinkle-serum-for-all-skin-types/p-16118824/)
Prices checked 10 Oct – 15 Oct 2026.

## Ingredients

Propylene Glycol, Dimethicone, Glycerin, Ascorbic Acid, Ethylhexyl Palmitate, Cetyl Peg Ppg-10 1 Dimethicone, Dimethicone Crosspolymer, Ascorbyl Glucoside, Cyclohexasiloxane, Hydroxyethylpiperazine Ethane Sulfonic Acid, Lauroyl Lysine, Acrylonitrile Methyl Methacrylate Vinylidene Chloride Copolymer, Polysilicone-11, Adenosine, Hydrolyzed Hyaluronic Acid, Limonene, Isobutane, Citrus Aurantium Dulcis Peel Oil, Citrus Limon Lemon Peel Oil, Citral, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
## 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/kiehl-s/powerful-strength-line-reducing-concentrate/for/sensitive-skin
- United Kingdom: https://lovi.care/skincare/uk/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/sensitive-skin (this page)
- Ireland: https://lovi.care/skincare/ie/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/sensitive-skin
- Germany: https://lovi.care/skincare/de/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/sensitive-skin
- France: https://lovi.care/skincare/fr/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/sensitive-skin
- Italy: https://lovi.care/skincare/it/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/sensitive-skin
- Netherlands: https://lovi.care/skincare/nl/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/sensitive-skin
- Spain: https://lovi.care/skincare/es/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/sensitive-skin
- Canada: https://lovi.care/skincare/ca/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/sensitive-skin
- Australia: https://lovi.care/skincare/au/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/sensitive-skin
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- United Arab Emirates: https://lovi.care/skincare/ae/p/kiehl-s/powerful-strength-line-reducing-concentrate/for/sensitive-skin