# Medik8 C-Tetra Serum for oily acne-prone skin

**Lovi Fit: Average fit for oily acne-prone skin.**
Oily Skin Fit: High · Effectiveness: Average · Safety: High.

Page: https://lovi.care/skincare/uk/p/medik8/c-tetra-serum/for/oily-acne-prone-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: [Medik8](https://lovi.care/skincare/uk/brands/medik8)
Category: [Serums and treatments](https://lovi.care/skincare/uk/best/serums)

This fit is calculated for the concerns frequently associated with oily acne-prone skin: shine, breakouts, blemishes, and enlarged pores. For scores based on a full skin profile (12D face scan, goals, preferences), use the Lovi app.

Works for oily acne-prone skin; other serums fit it better.

## Why this fit

- Offers excellent antioxidant protection for your oily skin with tetrahexyldecyl ascorbate to brighten and even skin tone, while jojoba seed oil and grapefruit peel oil provide moisturizing and mild exfoliating benefits that are supportive but not primary for your acne concerns.
- The formula is highly suitable for oily skin due to jojoba seed oil's seboregulation and tocopheryl acetate's antioxidant activity, contributing to overall skin health.
- The product is safe for your skin, with no risks of irritation due to the absence of prohibited or harsh ingredients.

## Fit by skin type

- [Oily skin](https://lovi.care/skincare/uk/p/medik8/c-tetra-serum/for/oily-skin): Average
- [Dry skin](https://lovi.care/skincare/uk/p/medik8/c-tetra-serum/for/dry-skin): Average
- [Combination skin](https://lovi.care/skincare/uk/p/medik8/c-tetra-serum/for/combination-skin): Average
- [Sensitive skin](https://lovi.care/skincare/uk/p/medik8/c-tetra-serum/for/sensitive-skin): Average
- [Acne-prone skin](https://lovi.care/skincare/uk/p/medik8/c-tetra-serum/for/acne-prone-skin): Low
- [Skin with dark spots](https://lovi.care/skincare/uk/p/medik8/c-tetra-serum/for/dark-spots): Average
- [Mature skin](https://lovi.care/skincare/uk/p/medik8/c-tetra-serum/for/mature-skin): Average
- [Dry sensitive skin](https://lovi.care/skincare/uk/p/medik8/c-tetra-serum/for/dry-sensitive-skin): Average
- [Oily acne-prone skin](https://lovi.care/skincare/uk/p/medik8/c-tetra-serum/for/oily-acne-prone-skin): Average (this page)

## Key ingredients

Tetrahexyldecyl Ascorbate Lipid Vitamin C, Jojoba Seed Oil, Tocopheryl Acetate Vitamin E, Grapefruit Peel Oil, Ppg-12 Smdi Copolymer

## What the research says

- Topical 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, 2017](https://pubmed.ncbi.nlm.nih.gov/28385617/))
- Dermatological 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, 2021](https://pubmed.ncbi.nlm.nih.gov/34471722/))
- 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/))
- Clay 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, 2012](https://pubmed.ncbi.nlm.nih.gov/22585103/))
- Topical 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, 2024](https://pubmed.ncbi.nlm.nih.gov/38344180/))
- Topical 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, 2025](https://pubmed.ncbi.nlm.nih.gov/41154623/))
- Topical 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, 2025](https://pubmed.ncbi.nlm.nih.gov/40642809/))
- Topical 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, 2024](https://pubmed.ncbi.nlm.nih.gov/38590207/))
- A 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, 2022](https://pubmed.ncbi.nlm.nih.gov/35150043/))
- A 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, 2021](https://pubmed.ncbi.nlm.nih.gov/33880349/))
- Topical 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, 2014](https://pubmed.ncbi.nlm.nih.gov/24160248/))
- Grapefruit 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](https://pubmed.ncbi.nlm.nih.gov/35505451/))

## Why other serums fit oily acne-prone skin better

- A 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, 2018](https://pubmed.ncbi.nlm.nih.gov/30588129/))
- Niacinamide 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](https://pubmed.ncbi.nlm.nih.gov/35342760/))

## What reviewers say

This 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.

- Liked: Gentle & Non-irritating (mostly mentioned)
- Liked: Brightening & Glow (often mentioned)
- Liked: Hydrating Texture (sometimes noted)
- Liked: Pleasant Scent (sometimes noted)
- Disliked: High Price Point (sometimes noted)
- Disliked: Oily/Greasy Feel (sometimes noted)
- Disliked: Caused Breakouts (rarely noted)
- Disliked: Lack of Potency (rarely noted)

## How to apply

- Could be used as part of your PM routine. Start 3 times a week and build up to daily use if your skin tolerates it well.
- Apply your serum after cleansing and toning, but before putting on your moisturizer.
- Gently press 2 to 3 drops of the serum into your skin and let it absorb for a minute.
- Apply the serum on clean, dry skin to help manage your blemishes safely.
- Do a patch test before your first use and avoid the delicate eye area.
- Video: https://storage.pora.ai/c879dda8655a61c19d3d8c9ebad6b06d.mp4

## Questions and answers

### How well does Medik8 C-Tetra work for oily acne-prone skin?

Medik8 C-Tetra Serum works decently for oily acne-prone skin by offering antioxidant protection and brightening with vitamin C, while jojoba seed oil and vitamin E help balance oil and support skin health. It is safe and unlikely to cause irritation, but treatments that rate higher for this skin need ingredients like niacinamide and soothing extracts to better manage blemishes and excess oil.
Sources: [Contemporary Clinical Trials Communications, 2021](https://pubmed.ncbi.nlm.nih.gov/34471722/)

### Which ingredients make this serum a good fit for oily acne-prone skin?

Tetrahexyldecyl ascorbate helps brighten and even your skin tone, while jojoba seed oil and tocopheryl acetate support oil balance and provide antioxidant protection. However, a treatment for oily acne-prone skin also needs ingredients like niacinamide and propolis to directly target blemishes and control excess oil.
Sources: [Contemporary Clinical Trials Communications, 2021](https://pubmed.ncbi.nlm.nih.gov/34471722/)

### What does Tetrahexyldecyl Ascorbate do for oily acne-prone skin?

Tetrahexyldecyl Ascorbate helps protect oily, acne-prone skin from daily stress and irritation while boosting firmness. When paired with stabilizers like acetyl zingerone, it stays stable and works even better to keep your skin smooth and calm.
Sources: [International Journal of Molecular Sciences, 2021](https://pubmed.ncbi.nlm.nih.gov/34445461/)

### What does Jojoba Seed Oil do for oily acne-prone skin?

Jojoba seed oil helps calm oily, acne-prone skin and may reduce blemishes when used regularly as part of your routine. Studies show it helps lower skin inflammation and supports a clear, balanced complexion.
Sources: [Forschende Komplementarmedizin, 2012](https://pubmed.ncbi.nlm.nih.gov/22585103/), [Frontiers in Pharmacology, 2024](https://pubmed.ncbi.nlm.nih.gov/38344180/)

### Where does this serum go in a skincare routine for oily acne-prone skin?

This treatment serum goes in your evening routine, applied after cleansing and toning and before your moisturizer. Putting it in the evening routine keeps things simple and provides extra safety around sun exposure, though some vitamin C serums can also be used in the morning or twice a day. For oily acne-prone skin, an ideal product of this type needs dedicated ingredients that directly target breakouts and manage excess oil while brightening the skin.

### Can I use this serum with retinol, and in what order?

You can use this serum with retinol by applying the serum first to give your oily skin bright, even tone, followed by your retinol. This product helps protect skin with vitamin C while keeping pores clear, but oily acne-prone skin ultimately needs targeted acne-fighting ingredients like salicylic acid or benzoyl peroxide for best results.

### How often should I use this serum?

You can use this treatment in the evening as part of your routine. This product works for oily acne-prone skin, though this skin type needs targeted ingredients like salicylic acid or benzoyl peroxide to directly manage breakouts.

### Can this serum clog pores, cause breakouts or purging for oily acne-prone skin?

This serum is unlikely to cause breakouts or clog pores because its ingredients have a safe and gentle profile for oily skin, though an oily or greasy feel may happen. To truly target acne concerns, oily acne-prone skin needs products featuring acne-fighting ingredients like salicylic acid or benzoyl peroxide.
Sources: [Contemporary Clinical Trials Communications, 2021](https://pubmed.ncbi.nlm.nih.gov/34471722/)

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

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

## Alternatives for oily acne-prone skin

- [Beauty of Joseon Propolis + Niacinamide Glow Serum](https://lovi.care/skincare/uk/p/beauty-of-joseon/propolis-niacinamide-glow-serum/for/oily-acne-prone-skin) — Superior fit — £36.96 at Amazon
- [Neogen Dermalogy Real Vitamin C Serum](https://lovi.care/skincare/uk/p/neogen-dermalogy/real-vitamin-c-serum/for/oily-acne-prone-skin) — Superior fit — £25.95 at Amazon
- [NEOGEN DERMALOGY REAL VITA C SERUM](https://lovi.care/skincare/uk/p/neogen-dermalogy/real-vita-c-serum/for/oily-acne-prone-skin) — High fit — £25.95 at Amazon

## Pairs well with

- Cleanser: [Paula's Choice CLEAR Pore Normalizing Cleanser](https://lovi.care/skincare/uk/p/paula-s-choice/clear-pore-normalizing-cleanser/for/oily-acne-prone-skin) — Superior fit — £26.00 at Amazon
- Hydrating Toner: [Paula's Choice Pore-Reducing Toner](https://lovi.care/skincare/uk/p/paula-s-choice/skin-balancing-pore-reducing-toner/for/oily-acne-prone-skin) — Superior fit — £30.37 at Amazon
- Moisturizer: [COSRX Oil-Free Ultra-Moisturizing Lotion with Birch Sap](https://lovi.care/skincare/uk/p/cosrx/oil-free-ultra-moisturizing-lotion-with-birch-sap/for/oily-acne-prone-skin) — Superior fit — £14.80 at Amazon

## Where to buy

- Amazon.co.uk: £45.00 (https://www.amazon.co.uk/dp/B07GFS6WXH?tag=lovi-care-web-product-21&linkCode=osi&th=1&psc=1)
- Lookfantastic: £36.00 (https://www.lookfantastic.com/p/medik8-c-tetra-serum-30ml/11795619/)
- Notino: £47.50 (https://www.notino.co.uk/medik8/c-tetra-antioxidant-serum-antioxidant-serum-with-vitamine-c/p-16088414/)
Prices checked 12 Oct – 6 Nov 2026.

## Ingredients

Jojoba Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Grapefruit Peel Oil, Tocopheryl Acetate, Ppg-12 Smdi Copolymer, Limonene, Citral, Linalool, Geraniol
## 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/medik8/c-tetra-serum/for/oily-acne-prone-skin
- United Kingdom: https://lovi.care/skincare/uk/p/medik8/c-tetra-serum/for/oily-acne-prone-skin (this page)
- Ireland: https://lovi.care/skincare/ie/p/medik8/c-tetra-serum/for/oily-acne-prone-skin
- Germany: https://lovi.care/skincare/de/p/medik8/c-tetra-serum/for/oily-acne-prone-skin
- France: https://lovi.care/skincare/fr/p/medik8/c-tetra-serum/for/oily-acne-prone-skin
- Italy: https://lovi.care/skincare/it/p/medik8/c-tetra-serum/for/oily-acne-prone-skin
- Netherlands: https://lovi.care/skincare/nl/p/medik8/c-tetra-serum/for/oily-acne-prone-skin
- Spain: https://lovi.care/skincare/es/p/medik8/c-tetra-serum/for/oily-acne-prone-skin
- Canada: https://lovi.care/skincare/ca/p/medik8/c-tetra-serum/for/oily-acne-prone-skin
- Australia: https://lovi.care/skincare/au/p/medik8/c-tetra-serum/for/oily-acne-prone-skin
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- Saudi Arabia: https://lovi.care/skincare/sa/p/medik8/c-tetra-serum/for/oily-acne-prone-skin
- United Arab Emirates: https://lovi.care/skincare/ae/p/medik8/c-tetra-serum/for/oily-acne-prone-skin