The INKEY List Collagen Peptide Serum for mature skin
Collagen Peptides
Acetyl Hexapeptide-8
Palmitoyl Tripeptide-1
Palmitoyl Tetrapeptide-7
Glycerin
High
- HighNormal Skin Fit
- HighEffectiveness
- HighSafety
One of the best moisturizers for mature skin.
This fit is calculated for the concerns frequently associated with mature skin: fine lines, wrinkles, and loss of firmness. 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 excellent plumping and firming for your normal skin due to the presence of acetyl hexapeptide-8 and palmitoyl tripeptide-1, which improve volume and elasticity.
- The serum also provides moderate benefits for wrinkles and fine lines by supporting collagen production with additional peptides like palmitoyl tetrapeptide-7.
- The safety profile is excellent, with no risks of irritation for your normal skin due to the absence of prohibited or harsh ingredients.
How to apply
- Use your moisturizer twice a day in your AM and PM routines. Apply it daily to help smooth fine lines.
- Apply this product after your toner and serum, but before your SPF in the morning. Follow your cleanser and toner steps to keep your skin balanced.
- Gently press a small amount into your face and neck. Avoid rubbing the skin too harshly to prevent extra tension.
- Apply the moisturizer on slightly damp skin to help lock in extra moisture. Clean skin helps the product absorb much more evenly.
- Avoid the sensitive eye area during application. Do a quick patch test before your very first use to stay safe.
People Say
★4.5Overall rating based on 1.0k+ reviewsBased on a very large amount of data, this serum is consistently praised for its ability to instantly plump and hydrate the skin, making it appear fresher and smoother. While many appreciate it as an affordable preventative measure for aging, a significant number of reviewers noted that it did not dramatically reduce deep wrinkles or fine lines on its own.
Highlights
Plumps and firms Mostly Mentioned
- “skin looks fresh and plump”
- “visibly plumper skin”
- “makes skin look bouncy”
Hydrating Often Mentioned
- “intense nourishment”
- “skin feels well hydrated”
- “leaves skin soft and supple”
Lightweight & fast-absorbing Often Mentioned
- “sinks in immediately”
- “super light but moisturizing”
- “layers well under makeup”
Affordable & fragrance-free Sometimes Noted
- “so affordable and effective”
- “great price point”
- “love that it is fragrance-free”
Lack of dramatic results Sometimes Noted
- “didn't see a huge difference”
- “no change in fine lines”
- “underwhelming results”
Messy packaging Sometimes Noted
- “product ends up around the opening”
- “hard to control amount”
- “cap gets messy”
Runny texture Sometimes Noted
- “very runny serum”
- “feels like water”
- “hard to measure a pea-sized amount”
Sticky finish Rarely Noted
- “sets to a tacky finish”
- “slightly sticky before moisturizer”
- “leaves a film”
Sources: lovi.care, cultbeauty.co.uk, lookfantastic.com, sephora.com.au, ulta.com, and more
Questions and answers
What makes The Inkey List Collagen Peptide Serum a great fit for mature skin?
This serum is a great fit because it helps firm and plump mature skin while smoothing out fine lines and wrinkles. It achieves this using peptides like acetyl hexapeptide-8 and palmitoyl tripeptide-1 to boost elasticity and support collagen production. It is also very gentle and unlikely to cause irritation.
American Journal of Clinical Dermatology, 2013Journal of Cosmetic Dermatology, 2026
Which ingredients make this serum a good fit for mature skin?
Acetyl hexapeptide-8 and palmitoyl tripeptide-1 make this serum a great fit because they help plump the skin, improve volume, and boost elasticity. Additionally, palmitoyl tetrapeptide-7 supports collagen production to help smooth out fine lines and wrinkles.
American Journal of Clinical Dermatology, 2013Journal of Cosmetic and Laser Therapy, 2013
What do Collagen Peptides do for mature skin?
Collagen peptides help improve skin elasticity, hydration, and the appearance of wrinkles in mature skin with daily use over several weeks. Clinical studies show that this ingredient supports skin firmness by helping boost moisture and structural proteins.
What does Argireline do for mature skin?
Argireline helps smooth out lines and makes mature skin look firmer and less rough when used twice a day. It may also help keep skin hydrated, though its penetration is naturally limited.
American Journal of Clinical Dermatology, 2013Journal of Cosmetic and Laser Therapy, 2013
Where does this serum go in a skincare routine for mature skin?
This serum goes in the evening routine after cleansing and before moisturizing. Putting treatments in the evening helps keep things simple and provides extra safety around sun exposure.
Can I use this serum with retinol, and in what order?
Yes, you can use this serum with retinol by applying the serum first to help firm and smooth, followed by your retinol. This safe combination helps keep your mature skin soft while working on fine lines without irritation.
American Journal of Clinical Dermatology, 2013Journal of Cosmetic and Laser Therapy, 2013
How often should I use this serum?
This serum is used in the evening as part of your routine. Using it daily helps improve firmness and volume while smoothing fine lines on mature skin.
Journal of Cosmetic Dermatology, 2020American Journal of Clinical Dermatology, 2013
Can this serum clog pores, cause breakouts or purging for mature skin?
This serum is unlikely to clog pores, cause breakouts, or lead to purging on mature skin because it contains no heavy oils, waxes, or harsh ingredients known to block pores. Its lightweight texture helps keep skin smooth and soft without triggering irritation.
Can I use this serum around the eyes or on my body?
You can use this serum on the thin skin around your eyes and on your body to help firm and smooth those areas. The gentle formula has a very safe profile, so it is unlikely to cause irritation on delicate skin.
Is this serum fragrance-free and alcohol-free?
Yes, it has no fragrance and no drying alcohol.
What the research says
Argireline treatment twice daily for 4 weeks produced a significant anti-wrinkle effect with 48.9% total efficacy and decreased skin roughness in Chinese subjects compared with 0% efficacy and no decrease in roughness in the placebo group.
American Journal of Clinical Dermatology, 2013Argireline applied twice daily for 4 weeks achieved a total anti-wrinkle efficiency of 48.9% and notably reduced wrinkle depth compared to placebo in Chinese subjects.
Journal of Cosmetic and Laser Therapy, 2013Chronomodulated daytime application of baicalin and nighttime application of palmitoyl tripeptide-1 synergistically improved skin luminance by 16.29%, nasolabial fold depth by -36.35%, and firmness by 24.35% in 30 female participants.
Journal of Cosmetic Dermatology, 2026A multi-modal methodology combining MALDI-MSI, in vivo RCM, echography, and histology revealed age-related decreases in extracellular matrix and epidermal-dermal junction proteins and undulation depth, while a blend of palmitoyl oligopeptide and palmitoyl tetrapeptide-7 improved subepidermal low-echogenic band thickness, density, and extracellular matrix structure compared to placebo.
Journal of Cosmetic Dermatology, 2015Palmitoyl tetrapeptide-7, acetyl hexapeptide-8, palmitoyl tripeptide-1, and palmitoyl tetrapeptide-10 significantly increased type III collagen levels in human dermal fibroblasts following UV exposure, with their combination demonstrating a greater effect in vitro and enhancing type I, III, and IV collagen levels in ex vivo skin tissues compared to individual components.
International Journal of Cosmetic Science, 2026A liquid formulation containing hydrolyzed collagen demonstrated structural stability, peptide mass distribution between 0.5 and 19.5 kDa, and faded forehead wrinkles in five volunteers while proving to be non-irritating and hypoallergenic.
Journal of Cosmetic Dermatology, 2021Exposure to collagen peptides increased the expression of COL1A1, ELN, and VCAN genes and collagen protein levels in cultured human dermal fibroblasts compared to untreated controls.
Frontiers in Medicine, 2024Salmo salar and Tilapia nilotica skin collagen peptides accelerate wound healing in a rat murine wound model by reducing proinflammatory cytokines, upregulating BD14, NOD2, IL-10, VEGF, and beta-FGF, and favorably altering wound microflora colonization compared to untreated controls.
Journal of Agricultural and Food Chemistry, 2020Treatment with cross-linked hyaluronic acid-based microneedle patches combined with acetyl hexapeptide-8 or epidermal growth factor significantly improved wrinkles and skin hydration compared to the patch alone in Korean females over 29 days.
Annals of Dermatology, 2019Acetyl hexapeptide-3 and tripeptide-10 citrulline demonstrated antiwrinkle efficacy and decreased transepidermal water loss in twenty-four healthy volunteers compared to control groups, though synergistic effects between the two peptides remained unclear.
Journal of Cosmetic Dermatology, 2017Daily topical acetyl hexapeptide-8 showed a trend toward a longer time until return to baseline Jankovic Blepharospasm Rating Scale scores compared to placebo (3.7 months vs. 3.0 months) in 24 patients with blepharospasm receiving botulinum toxin therapy.
European Journal of Neurology, 2013A 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, 2001
Ingredients
Water, Glycerin, Butylene Glycol, Pentylene Glycol, Acetyl Hexapeptide-8, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Carbomer, Xanthan Gum, Phenoxyethanol, Ethylhexylglycerin, Disodium Edta, Sodium Hydroxide
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
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