Lipid Vitamin C Enhanced Radiance Serum


Lipid Vitamin C Enhanced Radiance Serum

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Supercharge your morning routine with this enhanced version of our bestselling vitamin C serum C-Tetra, designed for all-round healthy-looking skin and visible radiance.



With elevated levels of vitamin C, C-Tetra Luxe provides potent brightening power delivered in a truly exquisite sensorial experience. The velvety squalane-infused serum envelopes the skin with nourishment and softness, for gentle yet effective power.



C-Tetra Luxe gifts the skin with incredible antioxidant ingredients for visible youth-renewing results. Overtime, the appearance of fine lines and wrinkles are softened.



Tetrahexyldecyl Ascorbate (Vitamin C), Vitamin E, Maracuja Oil, Fermented Red Ginseng, Vitamin F, Squalane

Delivery Options

Standard Delivery
£3.75 or FREE on orders over £35. Please allow 3-5 working days for delivery.


Priority Delivery
£4.95 or FREE on orders over £100. Next-Day delivery when you order before 6pm Monday to Friday (Excluding bank holidays) Shipped by DPD

Key Benefits

Powerful Yet Gentle Vitamin C
Elevating our C-Tetra range to new heights, C-Tetra Luxe features double the level of vitamin C found in the original serum, tetrahexyldecyl ascorbate, perfect for those looking for improved visible anti-ageing and brightening results.


Restores Visible Radiance
Vitamin C is joined by fermented red ginseng and maracuja oil for an all round unbeatable glow and healthy-looking, dewy skin.


Total Nourishment
The velvety formula also features squalane and vitamin F, ultra-nourishing emollients that deeply moisturise and support the natural skin barrier, ideal for drier and dehydrated skins.


Perfect Pair
When combined, vitamin C and sunscreen give skin the ultimate protection against the sun & environment throughout the day, to minimise signs of premature ageing. Shop our recommended SPF day cream Advanced Day Total Protect here.

How It Works

Your skin contains natural antioxidants that work to defend against free radicals from the environment. When these environmental free radicals outweigh your skin’s antioxidants, the skin can no longer protect itself. Free radicals latch onto the defenceless skin cells, causing irreparable damage, which ultimately leads to premature skin ageing.


C-Tetra Luxe offers optimum skin protection from free radical damage, featuring elevated levels of vitamin C to boost the natural antioxidant defence levels in the skin. Vitamin C is a key pillar of our CSA Philosophy, due to being one of the most powerful vitamins for preventing the signs of premature skin ageing. Vitamin C also helps to stimulate collagen production, and can disrupt the overproduction of melanin to brighten the appearance of dark spots and uneven skin tone. The result? Visibly radiant, healthier, more youthful-looking skin. C-Tetra contains an enhanced level of tetrahexyldecyl ascorbate, a form of vitamin C which is a stabilised modification of ascorbic acid (the purest form of vitamin C) that is gentle on the skin yet proven to deliver visible results. C-Tetra Luxe has double the level of tetrahexyldecyl ascorbate found in the original C-Tetra serum, for improved visible results.


Infused with Amazonian maracuja oil, C-Tetra Luxe is powered by the exotic antioxidant properties that originate from the passion fruit. Sustainably-sourced, our maracuja oil is naturally rich in vitamin E and linoleic acid, renowned for its nourishing and protective qualities on the skin. The superfruit helps to leave skin looking firmer and smoother with a noticeable glow.


The intense brightening power of C-Tetra Luxe is supercharged with the influence of optimised red ginseng. With incredible abilities as a potent tyrosinase-inhibitor, the botanical component works with vitamin C to restore the appearance of skin’s natural radiant, even tone.


All of the above technologies are delivered with ease in a silky squalane-base combined with vitamin F to envelope the complexion in total nourishment that feels rich with moisture all day long, while helping to nurture the skin’s natural barrier.

How To Use

After cleansing in the morning, massage 6 drops of C-Tetra Luxe across the face, neck and décolletage.


Leave to absorb before applying sunscreen. We recommend Advanced Day Total Protect.


Patch testing prior to use is advised. Refer to medik8.co/patch for an in-depth guide to patch testing.


Interested in routines & layering?

C-Tetra Luxe features in many of our carefully curated regime guides, including our Beautiful Skin Everyday regime. Click the link for additional product recommendations and easy-to-follow layering advice.


? Tetrahexyldecyl Ascorbate?

A lipid-soluble form of vitamin C that provides exceptional antioxidant protection from harmful free radicals, while stimulating collagen production for a youthful complexion.


? Vitamin E?

A lipid-soluble antioxidant that is naturally present in the skin. Vitamin E protects the skin from free radicals and is regenerated by vitamin C for optimum power.



A natural emollient; squalane helps to restore the skin’s natural defensive barrier while deeply hydrating the skin.


Maracuja Oil

Naturally rich in nutrients, maracuja oil nourishes the complexion with fatty acids and provides an antioxidant protective shield.


Optimised Red Ginseng

Extracted from the root of red ginseng, this natural extract boosts the serum’s brightening powers while stimulating collagen production.


Full Ingredients


What we choose not to include



Used in Professional Treatments

Boost the results of C-Tetra® Luxe
Visit a Medik8 specialist for a detailed skin consultation and experience one of our relaxing anti-ageing facial treatments.


Rewind Professional Skin Peel
A targeted peel that helps to promote collagen production to reduce the appearance of fine lines and wrinkles. It fades away imperfections, leaving the skin visibly smoothed and rejuvenated.


Get a consultation

The Science Behind

“C-Tetra Luxe is the pinnacle of our C-Tetra range. Containing double the amount of tetrahexyldecyl ascorbate and an infusion of radiance boosting antioxidants delivered in a nourishing squalane base, C-Tetra Luxe is the perfect all-rounder in our vitamin C range. We recommend this to the majority of skin types including those looking for intense anti-ageing results, drier and dehydrated skin types, and those looking for a powerful antioxidant serum that remains gentle on the skin despite its high concentration of vitamin C.”


Daniel Isaacs, Medik8 Director of Research




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