Medik8 C-Tetra Serum for acne-prone skin
Tetrahexyldecyl Ascorbate Lipid Vitamin C
Jojoba Seed Oil
Tocopheryl Acetate Vitamin E
Grapefruit Peel Oil
Ppg-12 Smdi CopolymerLow
- HighCombination Skin Fit
- AverageEffectiveness
- HighSafety
A weak match for acne-prone skin; the serums alongside fit it better.
This fit is calculated for the concerns frequently associated with acne-prone skin: breakouts, blackheads, and post-acne marks. 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
- Highly suitable for combination skin due to Tetrahexyldecyl Ascorbate offering antioxidant activity and Jojoba Seed Oil providing emollient action, though it lacks targeted ingredients for your acne, blemishes, and breakouts.
- It offers moderate antioxidant protection for brightening and evening skin tone, providing general skincare benefits like hydration and cleansing.
- The formulation is safe for your combination skin, with no risks of irritation due to the absence of prohibited or harsh ingredients.
How to apply
- Use your serum as part of your PM routine and start 3x/week before working up to daily use.
- Apply this treatment after cleansing and toner, and before your moisturizer.
- Gently press 2-3 drops of the serum into your skin and let it absorb for a minute.
- Apply the product on clean, dry skin to help manage your breakouts safely.
- 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
Why is Medik8 C-Tetra a weak match for acne-prone skin?
Medik8 C-Tetra Serum is a weak match for acne-prone skin because it lacks targeted ingredients for acne, blemishes, and breakouts. Acne-prone skin needs a product containing effective ingredients like niacinamide, propolis, and zinc PCA that provide excellent benefits for acne while controlling oiliness.
Which ingredients make this serum a poor fit for acne-prone skin?
This serum is a weak match for acne-prone skin because it lacks targeted ingredients for breakouts and blemishes like niacinamide, zinc pca, and propolis. Instead, acne-prone skin needs products with effective ingredients that clear blemishes and control oiliness while keeping the skin balanced and hydrated.
What does Tetrahexyldecyl Ascorbate do for acne-prone skin?
Tetrahexyldecyl Ascorbate is generally suitable for acne-prone skin because it provides antioxidant protection and helps calm irritation without clogging pores. When used in this skin type, this form of vitamin C helps keep the skin smooth and balanced while defending against environmental stress.
What does Jojoba Seed Oil do for acne-prone skin?
Jojoba seed oil helps calm acne-prone skin and reduces breakouts over time. It may also help lower inflammation and clear up lesions.
Forschende Komplementarmedizin, 2012Frontiers in Pharmacology, 2024
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 needs a product with targeted ingredients for blemishes and breakouts instead.
Can I use this serum with retinol, and in what order?
You can use this treatment in your evening routine after cleansing and before moisturizing, but it is a weak match for acne-prone skin because it lacks targeted ingredients for breakouts. This skin type needs ingredients that treat blemishes and calm irritation, such as retinoids, benzoyl peroxide, or gentle acids.
How often should I use this serum?
This treatment is used in the evening for acne-prone skin, starting once a week and using it more often if your skin tolerates it well. Because it is a weak match for your skin, acne-prone skin needs a product with targeted ingredients that help clear blemishes and breakouts.
Can this serum clog pores, cause breakouts or purging for acne-prone skin?
This serum may cause breakouts for acne-prone skin because it lacks targeted ingredients to help with blemishes and pimples. A product for this skin needs ingredients that actively clear pores and calm breakouts. Clinical tests show vitamin E has a low likelihood of clogging pores.
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
A 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, 2019Dermatological 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, 2021Topical 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 acne-prone skin better
Topical nicotinamide plus an antibacterial adhesive agent and zinc-pyrrolidone carboxylic acid combined with adapalene significantly reduced noninflammatory acne lesions by the second week of therapy compared to placebo with adapalene in patients with moderate acne vulgaris.
The Journal of Clinical and Aesthetic Dermatology, 2020A cream combining propolis, tea tree oil, and Aloe vera reduced erythema scars, acne severity index, and total lesion count better than erythromycin cream in sixty patients with mild to moderate acne vulgaris compared to placebo.
Clinical Pharmacology, 2018Niacinamide and ferulic acid incorporated in a stable multiple emulsion successfully reduced melanin, sebum, and skin erythema while improving skin elasticity and hydration in human skin compared to a placebo.
BioMed Research International, 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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Dr. Sofía Perea Pérez, MD, MSc
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Specialist dermatologist, MBBS, MD, IFAAD
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Elina Nazarenko, MD
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Victoria Derkova, MS
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