Medik8 C-Tetra Serum for dry skin
Tetrahexyldecyl Ascorbate Lipid Vitamin C
Jojoba Seed Oil
Tocopheryl Acetate Vitamin E
Grapefruit Peel Oil
Ppg-12 Smdi CopolymerAverage
- AverageDry Skin Fit
- AverageEffectiveness
- HighSafety
Works for dry skin; other serums fit it better.
This fit is calculated for the concerns frequently associated with dry skin: flakiness, tightness, dehydration, fine lines, and wrinkles. 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 antioxidant protection and hydration for your dry skin, as Tetrahexyldecyl Ascorbate brightens and evens skin tone while Jojoba Seed Oil provides emollient effects.
- Tocopheryl Acetate offers additional antioxidant benefits, though the formula could be enhanced with more humectant ingredients for optimal hydration.
- The product is safe for your dry skin, with no risks of irritation due to the absence of prohibited or harsh ingredients.
How to apply
- Apply this serum PM, starting 3×/week and working up to daily use as your skin adjusts.
- Place the serum after cleansing and toner, but right before your moisturizer.
- Gently press 2-3 drops of the serum into your skin and let it absorb for a minute.
- Apply the serum on slightly damp skin to help lock in extra moisture.
- Avoid the eye area and do a patch test before your first use.
People Say
★4.7Overall rating based on 200+ reviewsThis serum is widely praised as an excellent entry-level Vitamin C product, particularly for those with sensitive or dry skin due to its gentle, non-irritating formula. Users consistently report a noticeable "healthy glow" and improved hydration, though those with oily or acne-prone skin sometimes find the oil-based texture too heavy or congestion-inducing.
Highlights
Gentle & Non-irritating Mostly Mentioned
- “only Vitamin C my sensitive skin can tolerate”
- “completely non-irritating”
Brightening & Glow Often Mentioned
- “unlocked a serious glow”
- “visibly brighter complexion”
- “faded post-acne marks”
Hydrating Texture Sometimes Noted
- “sinks in beautifully”
- “feels incredibly hydrating”
- “leaves skin velvety soft”
Pleasant Scent Sometimes Noted
- “smell is gorgeous”
- “fresh citrus scent”
- “refreshing and pleasant”
High Price Point Sometimes Noted
- “hefty price tag”
- “way too overpriced”
- “not worth the money”
Oily/Greasy Feel Sometimes Noted
- “too oily for my combination skin”
- “left a sticky residue”
- “felt heavy on my face”
Caused Breakouts Rarely Noted
- “made me break out constantly”
- “clogged my pores”
- “caused small bumps”
Lack of Potency Rarely Noted
- “didn't notice any benefits”
- “too gentle for advanced damage”
- “wanted stronger results”
Sources: lovi.care, cultbeauty.com, dermstore.com, influenster.com, reddit.com, whowhatwear.com, and more
Questions and answers
How well does Medik8 C-Tetra work for dry skin?
Medik8 C-Tetra works for dry skin by offering moderate antioxidant protection and hydration, though other products fit this skin type better. A product of this type needs more moisture-holding ingredients alongside soothing components like ceramides, niacinamide, or peptides to give dry skin optimal hydration and barrier support.
Which ingredients make this serum a good fit for dry skin?
This serum fits dry skin thanks to tetrahexyldecyl ascorbate, which brightens and evens tone, and jojoba seed oil, which softens the skin. Tocopheryl Acetate provides extra antioxidant support, though dry skin of this type needs more water-attracting ingredients for best hydration.
What does Tetrahexyldecyl Ascorbate do for dry skin?
Tetrahexyldecyl Ascorbate helps brighten dry skin and protects it from daily environmental stress while supporting collagen production. When combined with stabilizers like acetyl zingerone, it is less likely to cause irritation and maintains its antioxidant benefits effectively.
What does Jojoba Seed Oil do for dry skin?
Jojoba seed oil helps dry skin by boosting hydration and keeping the skin soft and smooth. It may also calm irritation and support skin barrier repair.
Frontiers in Pharmacology, 2024International Journal of Molecular Sciences, 2017
Where does this serum go in a skincare routine for dry skin?
This treatment serum goes in the evening routine after cleansing and before moisturizing. Dry skin of this type needs extra moisture-attracting ingredients to keep it soft and comfortable.
Can I use this serum with retinol, and in what order?
You can use this serum with retinol by applying retinol first in your evening routine, followed by this treatment. This product is unlikely to irritate your dry skin, though a product for dry skin of this type needs extra moisture-attracting ingredients to keep skin fully hydrated.
How often should I use this serum?
You can use this serum in the evening as part of your routine. Dry skin needs a product of this type that also includes extra water-attracting ingredients for optimal hydration.
Can this serum clog pores, cause breakouts or purging for dry skin?
This serum is unlikely to cause breakouts on dry skin, and reviewers rarely mention any issues with clogged pores. The formula features ingredients with a very safe record on skin, though dry skin generally benefits from additional moisture-binding ingredients to keep it soft and comfortable.
Is this serum fragrance-free and alcohol-free?
It has no drying alcohol and contains fragrance (limonene, citral, linalool, and geraniol).
What the research says
Co-encapsulation of alpha-tocopherol and alpha-tocopheryl acetate in nanostructured lipid carrier gel formulations significantly enhanced moisture retention up to 68% and improved skin elasticity in human volunteers compared to a solution gel.
Scientific Reports, 2025Dermatological products containing d-alpha tocopheryl acetate showed non-comedogenic potential with less than a 50% increase in microcomedones in 12 healthy male subjects compared to octyl palmitate.
Contemporary Clinical Trials Communications, 2021A 3-in-1 anti-aging topical night serum-in-oil applied once daily decreased wrinkles by 11%, increased skin firmness by 8%, reduced redness by 70%, and improved overall skin quality and complexion in 103 female subjects over 28 to 84 days compared to baseline.
Journal of Cosmetic Dermatology, 2019Topical formulations containing ascorbyl tetraisopalmitate, coenzyme Q10, green tea polyphenols, and resveratrol reduced the release of inflammatory cytokines and attenuated inflammatory signs compared to untreated skin and vehicle in 25 Japanese volunteers exposed to sodium dodecyl sulfate.
European Journal of Pharmaceutics and Biopharmaceutics, 2017Topical 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, 2003Ascorbic acid 2-glucoside gel significantly reduced gingival melanin pigmentation after 4 weeks compared to placebo in 73 subjects with symmetric pigmentation.
Journal of Periodontology, 2009Topical 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, 2022Clay jojoba oil facial masks reduced total skin lesions by a mean of 54% after 6 weeks in 133 participants with acne-prone, lesioned skin and mild acne compared to baseline.
Forschende Komplementarmedizin, 2012Topical application of jojoba wax reduced LPS-induced secretion of IL-6, IL-8, and TNFα by approximately 30% and increased the synthesis of pro-collagen III and hyaluronic acid compared to untreated skin in an ex-vivo human skin organ culture model.
Frontiers in Pharmacology, 2024Topical jojoba oil application in male mice decreased exercise-induced pro-inflammatory gene expression (Il-1b and Il-6 in soleus, Il-1b in gastrocnemius) compared to untreated exercised mice.
Biomolecules, 2025Topical application of an antioxidant serum containing 15% ascorbic acid, 0.5% ferulic acid, and 1% tocopherol prevented particulate matter-induced degradation of extracellular matrix components, inflammation, and oxidative stress in the skin of 15 female volunteers compared to untreated controls.
Journal of Cosmetic Dermatology, 2025Topical application of an antioxidant mix containing 15% ascorbic acid, 0.5% ferulic acid, and 1% tocopherol prevented PM and UV-induced skin barrier perturbation, lipid peroxidation, inflammatory markers, MMP9 activation, and Type I collagen loss in 15 healthy females compared to untreated exposed skin.
Journal of Cosmetic Dermatology, 2024A topical antioxidant serum significantly reduced air pollution-induced skin pigmentation and proinflammatory gene expression ex vivo, and improved skin aging signs in 40 healthy adult females after 90 days of daily use.
Journal of Cosmetic Dermatology, 2022A novel D-limonene and Gelucire 44/12 based microemulsion formulated with Labrasol and Labrafil M 1944 CS showed high stability, optical transparency, nanometric globule size, and a safe in vivo skin profile on mice ear skin.
Advanced Pharmaceutical Bulletin, 2021Topical application of d-Limonene and perillyl alcohol reduced the severity of TPA-induced skin lesions, lowered serum IL-6 and TNF-alpha concentrations, inhibited P-selectin expression, and improved tissue regeneration associated with reduced neovascularization in murine models.
Anti-inflammatory & Anti-allergy Agents in Medicinal Chemistry, 2014Grapefruit essential oil promoted HaCaT cell proliferation, reduced ROS production, inhibited IL-1 and COX-2 expression, and recovered LOR and FLG contents in a cell damage model of skin inflammation stimulated by S. aureus metabolites compared to lime essential oil.
Chemistry & Biodiversity, 2022
Why other serums fit dry skin better
Treatment 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, 2019A lipid mixture enriched by ceramide NP with fatty acids of diverse chain lengths significantly improved skin barrier recovery rate, stratum corneum integrity, and hydration compared to a vehicle cream in healthy adult male volunteers with corticosteroid-impaired skin.
Skin Pharmacology and Physiology, 2022
Ingredients
Jojoba Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Grapefruit Peel Oil, Tocopheryl Acetate, Ppg-12 Smdi Copolymer, Limonene, Citral, Linalool, Geraniol
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
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PhD in computer science, 3x US patent holder, ex-Google, ex-Yandex
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Dr. Sofía Perea Pérez, MD, MSc
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Aesthetic medicine practitioner, MSc in Longevity and Anti-Aging Medicine
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Specialist dermatologist, MBBS, MD, IFAAD
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Dermatology MD
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Elina Nazarenko, MD
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Dermatology and diagnostic consultant
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Victoria Derkova, MS
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Cosmetic chemist, cosmetic development technologist
How does it fit your skin?
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