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Medik8

C-Tetra Advanced

£69.00

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Key Benefits

  • Dramatically brighten skin and even tone in just 7 days, revealing a radiant, luminous complexion*
  • Defend against premature skin ageing by shielding skin from free radicals, pollution, and daily environmental stressors
  • Support the skin barrier and enhance resilience with phyto exosomes that deliver bioactives efficiently while maintaining 0% barrier disruption*
  • Improve skin smoothness and texture for a soft, polished, and even-looking complexion within 7 days*
  • Enjoy a lightweight, fast-absorbing gel-serum that hydrates, smooths, and leaves skin refreshed and ready for your day
Targets
  • Dull skin Dull skin
  • Pigmentation Pigmentation
  • Ageing skin Ageing skin
When to use
  • Morning Morning
Product details

See a visible reduction in wrinkles and brighter, more radiant skin in just 7 days!*

 

Medik8 C-Tetra Advanced is a high-performance vitamin C serum designed to smooth, brighten, and defend skin against signs of ageing.

 

This intelligent formula combines 20% stabilised vitamin C with restorative phyto exosomes and the omni-antioxidant acetyl zingerone to protect skin from environmental stressors and support recovery from free radical damage.

 

Clinically proven to improve skin texture and luminosity without compromising the skin barrier, C-Tetra Advanced delivers daily antioxidant protection and helps reveal a healthier, youthful-looking complexion.

 

*Proven via an independent clinical study over 4 weeks on 32 participants.

Directions for use
  • Apply 2–3 pumps of serum to the face, neck, and décolletage. Gently massage until fully absorbed, then follow with your usual moisturiser and daily SPF.
  • For optimal results, pair with Medik8 Advanced Day Ultimate Protect sunscreen.
Key ingredients
  • 20% Stabilised Vitamin C (Tetrahexyldecyl Ascorbate) – A potent yet gentle form of vitamin C that brightens skin and provides strong antioxidant protection against premature ageing.
  • Phyto Exosomes – Naturally encapsulated to deliver proteins, lipids, and messenger molecules to skin cells, supporting resilience and helping prevent signs of premature ageing alongside vitamin C.
  • Acetyl Zingerone – A powerful antioxidant that works with vitamin C to neutralise free radicals and protect skin from environmental stressors.
  • Multi-Weight Hyaluronic Acid – Hydrates deeply and plumps the skin by drawing moisture into multiple layers for a soft, supple complexion.
  • N-Acetyl Glucosamine (NAG) – Supports the skin barrier, smooths the appearance of pores, and helps boost the skin’s natural hyaluronic acid over time.
All ingredients
Aqua (Water), Tetrahexyldecyl Ascorbate, Isododecane, Propanediol, Acetyl Glucosamine, Squalane, Tocopherol, Acetyl Zingerone, Camellia Sinensis (Green Tea) Leaf Vesicles, Hydroxyacetophenone, Sodium Hyaluronate, Cellulose, Avena Sativa (Oat) Kernel Extract, Glycerin, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Citrus Grandis (Grapefruit) Peel Oil, Sucrose Stearate, Tetrasodium Glutamate Diacetate, Ethylhexylglycerin, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Xanthan Gum, Sodium Benzoate, Cellulose Gum, 1,2-Hexanediol, Polysorbate 60, Sorbitan Isostearate, Citric Acid, Phenoxyethanol, Citral, Linalool, Limonene. Please note: This ingredient list is sourced directly from the brand's website. While we make every effort to ensure the information is accurate and up to date, formulations may change over time. For the most current and reliable details, please contact us at hello@myfacedr.com.

Pairs well with

Medik8 Press & Glow
Daily Exfoliating PHA Tonic with Enzyme Activator

Press & Glow

£32.00 200ml

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Reviews

C-Tetra Advanced FAQs

What is Medik8 C-Tetra Advanced and what does it do?

C-Tetra Advanced is a high-performance vitamin C serum designed to brighten the skin, reduce the appearance of wrinkles, and provide antioxidant protection. It combines stabilised 20% vitamin C with phyto exosomes and acetyl zingerone to shield skin from environmental stressors while supporting overall skin resilience and radiance.

How do I use Medik8 C-Tetra Advanced?

Apply 2–3 pumps to the face, neck, and décolletage after cleansing and toning. Massage until fully absorbed, then follow with your moisturiser and daily SPF. For best results, consistency is key - using the serum daily helps maintain brightness and strengthens the skin’s antioxidant defence.

Can I use C-Tetra Advanced with other skincare products?

C-Tetra Advanced integrates effortlessly into most skincare routines. In the morning, it works particularly well with moisturisers and sunscreens, such as Medik8 Advanced Day Ultimate Protect, to provide optimal protection against environmental stressors. In the evening, it can be paired with a vitamin A product, following Medik8’s CSA philosophy, allowing both treatments to deliver maximum results while minimising the risk of irritation.

Does it provide protection against environmental damage?

Definitely. The combination of vitamin C, phyto exosomes, and acetyl zingerone delivers potent antioxidant defence. This helps neutralise free radicals caused by UV exposure, pollution, and other environmental stressors, reducing oxidative damage and slowing premature ageing.

Can it help with uneven skin tone or dark spots?

Yes, the 20% stabilised vitamin C actively brightens the skin and helps reduce the appearance of dark spots and pigmentation irregularities over time. By neutralising free radicals and supporting healthy skin turnover, it promotes a more even, luminous complexion.

Can I use Medik8 C-Tetra Luxe while pregnant or breastfeeding?

Gentle vitamin C is generally considered safe to use during pregnancy and breastfeeding. However, since this is a highly potent 20% formulation, we recommend consulting with one of our Skin Experts before introducing it into your routine.

Can it be used as part of a preventative anti-ageing routine?

Yes, incorporating C-Tetra Advanced into your daily regimen helps prevent premature signs of ageing. By protecting the skin from free radical damage and supporting collagen production, it works proactively to maintain youthful, radiant skin.

How should I store C-Tetra Advanced?

To maintain potency and stability, store the serum in a cool, dry place away from direct sunlight or heat. Proper storage ensures the vitamin C remains effective and that you get the full benefits of its brightening and protective properties.
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