Kiehl's Age Defender Power Serum for skin with dark spots
Cupressus Sempervirens Extract
Glycerin
Dimethicone
Hydrolyzed Soy Protein
Caffeine
Average
- AverageNormal Skin Fit
- AverageEffectiveness
- HighSafety
Works for skin with dark spots; other serums fit it better.
This fit is calculated for the concerns frequently associated with dark spots: hyperpigmentation, sun spots, and uneven skin tone. For scores and recommendations based on your full skin profile, including your 12D face scan results and any goals or preferences you have, please use the Lovi app.
Page built Nov 8, 2026How the Fit score works
Lovi Assistant explains
- Offers moderate plumping and firming for your normal skin due to Hydrolyzed Soy Protein and Adenosine, which support elasticity and volume, but these ingredients do not directly address your main goal of pigmentation.
- Glycerin and Butylene Glycol provide general hydration and barrier support, which are beneficial for normal skin but do not significantly target pigmentation concerns.
- The product is safe for your normal skin, as it lacks harsh ingredients and has no risk of irritation.
How to apply
- Apply this serum as part of your PM routine starting 3x/week and build up to daily use if your skin likes it.
- Place the serum after cleansing and toning, but before your moisturizer.
- Gently press 2-3 drops of the serum into your skin and wait a minute for it to absorb.
- Apply the serum on dry skin to help fade pigmentation effectively.
- Avoid the eye area and always use SPF 30+ during the day.
People Say
★4.4Overall rating based on 600+ reviewsThis serum is highly regarded for its lightweight, fast-absorbing formula that effectively hydrates and firms men's skin. Users frequently report visible improvements in skin texture and a reduction in the appearance of forehead lines and wrinkles with consistent daily use.
Highlights
Fast absorption Mostly Mentioned
- “Absorbs instantly”
- “Sinks in fast”
- “No sticky feeling”
Non-greasy feel Often Mentioned
- “Doesn't feel greasy”
- “No residue”
- “Lightweight gel”
Improves firmness Sometimes Noted
- “Skin feels tighter”
- “Visibly firmer”
- “More resilient”
Reduces lines Sometimes Noted
- “Forehead creases shallower”
- “Helped with lines”
- “Smoothed texture”
High price point Sometimes Noted
- “It's pricey”
- “Expensive for size”
- “Costly for daily use”
Caused dryness Rarely Noted
- “Skin still dry”
- “Caused some irritation”
- “Not hydrating enough”
Packaging issues Rarely Noted
- “Pump not functioning”
- “Bottle issues”
- “Dispenser problems”
Subtle results Rarely Noted
- “No apparent tightening”
- “Hard to notice”
- “Slow to see change”
Sources: lovi.care, kiehls.com, macys.com, ulta.com, bloomingdales.com, spacenk.com, and more
Questions and answers
How well does Kiehl's Age Defender Power Serum work for skin with dark spots?
This serum works for skin with dark spots by providing general hydration and firming, but its ingredients do not directly target pigmentation. A treatment for this skin needs a blend of effective antioxidants and soothing ingredients that fade dark spots without irritation.
Which ingredients make this serum a good fit for skin with dark spots?
This serum works for skin with dark spots because it provides general moisture and firmness, though it does not directly target pigmentation. To effectively fade dark spots, this skin type needs targeted ingredients like antioxidants and soothing agents that brighten tone without causing irritation.
What does Cypress Extract do for skin with dark spots?
Cypress extract helps fade dark spots and even out skin tone. Plant extracts like this work by safely slowing down pigment production in the skin.
The Journal of Investigative Dermatology. Symposium Proceedings, 2008International Journal of Cosmetic Science, 2008
What does Glycerin do for skin with dark spots?
Glycerin helps keep dry skin hydrated and supports a healthy skin barrier, which makes skin feel soft and smooth. While it does not directly fade dark spots on its own, it is often added to spot-fading products to keep the skin comfortable while other ingredients work.
Clinical, Cosmetic and Investigational Dermatology, 2017Acta Dermato-venereologica, 2017
Where does this serum go in a skincare routine for skin with dark spots?
This serum goes in the evening routine after cleansing and before moisturizing, though products of this type for skin with dark spots need brightening ingredients like vitamin C or exfoliating acids to target pigmentation.
Can I use this serum with retinol, and in what order?
You can use this serum with retinol by applying your retinol product first and following with this treatment to keep your skin hydrated. This product is safe for your skin with no risk of irritation, though fading dark spots effectively calls for ingredients like vitamin C, niacinamide, or alpha arbutin.
How often should I use this serum?
This serum works in the evening as a treatment step, so you can safely apply it once a day or a few times a week. To effectively target dark spots, this skin needs dedicated brightening ingredients like vitamin C, niacinamide, or alpha arbutin.
Can this serum clog pores, cause breakouts or purging for skin with dark spots?
This serum is unlikely to clog pores or cause breakouts for your skin, as it has a safe profile without harsh ingredients. Skin with dark spots needs targeted brightening ingredients like vitamin C or niacinamide to effectively fade discoloration.
Is this serum fragrance-free and alcohol-free?
It contains fragrance (parfum, limonene, linalool, and citral) and drying alcohol (alcohol denat).
What the research says
Adenosine-loaded dissolving microneedle patches showed similar or better efficacy on skin wrinkles, dermal density, elasticity, and hydration compared to adenosine cream in 22 female subjects.
International Journal of Cosmetic Science, 2018Horse oil-spread and adenosine-loaded dissolving microneedle patches significantly improved skin elasticity, hydration, dermal density, and wrinkles compared with adenosine-loaded dissolving microneedle patches in 20 women without causing adverse events.
Journal of Cosmetic Dermatology, 2019A 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, 2017The 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, 2020Ten 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, 2001Niacinamide/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, 2012Wearing an N95 mask alone compared to using dimethicone cream or hydrocolloid dressing caused more adverse skin reactions among 73 military health care workers, with no significant differences in fit test failure rates between groups.
Military Medicine, 2024A dimethicone skin protectant lotion significantly decreased visual scoring and transepidermal water loss compared to vehicle control and SLS-only treated sites in 12 healthy humans exposed to sodium lauryl sulfate.
Skin Research and Technology, 2000Treatment with a moisturizer containing dimethicone and glycerine increased epidermal thickness by 0.019 mm, improved barrier function by decreasing transepidermal water loss by 13%, decreased melanin intensity, and induced keratins 6 and 16 in fifteen women with moderately photoaged forearms.
Clinical and Experimental Dermatology, 2007A topical cosmetic slimming product containing tetrahydroxypropyl ethylenediamine, caffeine, carnitine, forskolin and retinol significantly reduced body circumferences and improved skin aspect compared with placebo in 78 women over 12 weeks.
International Journal of Cosmetic Science, 2011Topical sunscreen formulations containing caffeine combined with UV filters increased in vivo anti-UVB protection by approximately 25% and showed higher SPF values compared to caffeine-free sunscreen, while being well tolerated by the skin of healthy subjects.
Frontiers in Physiology, 2019Caffeine gel combined with choline geranate showed high skin permeation capacity and superior clinical results in cellulite treatment compared to caffeine gel without ionic liquid.
AAPS PharmSciTech, 2021
Why other serums fit skin with dark spots better
Niacinamide significantly decreased hyperpigmentation and increased skin lightness compared with vehicle alone after 4 weeks of use in women by inhibiting melanosome transfer.
The British Journal of Dermatology, 2002Treatment with 14% ferulic acid and 12% l-ascorbic acid significantly reduced pigmentation and erythema while improving hydration and elasticity in 20 women with photoaged skin, with neither acid proving definitively more effective overall though ascorbic acid showed slightly greater skin lightening.
Dermatologic Therapy, 2022
Ingredients
Water, Glycerin, Dimethicone, Alcohol Denat, Isononyl Isononanoate, Butylene Glycol, Ammonium Polyacryloyldimethyl Taurate, Phenoxyethanol, Pentylene Glycol, Hydrolyzed Soy Protein, Parfum, Hydroxypropyl Tetrahydropyrantriol, Propylene Glycol, Ruscus Aculeatus Root Extract, Glycine Soja Oil, Soybean Oil, Caffeine, Tocopherol, Hydrolyzed Rice Protein, Limonene, Biosaccharide Gum-1, Disodium Edta, Adenosine, T-Butyl Alcohol, Hydroxypalmitoyl Sphinganine, Cryptomeria Japonica Bud Extract, Linalool, Citral
Behind this fit score
Lovi calculates every fit score from the full ingredient list with brand-independent rules our 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.
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Co-founder, Medical Director
Cosmetic chemist, cosmetologist, aesthetic products developer
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Co-founder, CEO and CTO
PhD in computer science, 3x US patent holder, ex-Google, ex-Yandex
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Dr. Sofía Perea Pérez, MD, MSc
Medical Board
Aesthetic medicine practitioner, MSc in Longevity and Anti-Aging Medicine
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Medical Board
Specialist dermatologist, MBBS, MD, IFAAD
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Medical Board
Cosmetic chemist, SCS, IFSCC member
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Medical Board, Medical Advisor
Dermatology MD
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Elina Nazarenko, MD
Medical Board
Dermatology and diagnostic consultant
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Victoria Derkova, MS
Medical Board
Cosmetic chemist, cosmetic development technologist
How does it fit your skin?
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