Supercharge your skin's radiance each morning with C-Tetra Luxe; clinically proven to reduce the appearance of wrinkles and hyperpigmentation in just 4 weeks.* It also works to boost visible radiance while supporting the skin barrier. Featuring twice the amount of vitamin C (14%) of our original C-Tetra serum, C-Tetra Luxe is ideal for those looking for enhanced skin radiance and antioxidant protection alongside deep nourishment.

The velvety-soft serum is formulated with a stabilised (and therefore very potent) form of vitamin C called tetrahexyldecyl ascorbate (pronounced 'tetra-hexul-deckul as-CORR-bate'), which delivers proven results after just 1 use*; all with a gentle, nourishing experience for your skin.

*Proven via independent clinical study on C-Tetra Luxe conducted over 4 weeks on 36 participants

C-Tetra® Luxe

Name: C-Tetra® Luxe
Brand: Medik8
SKU: P08887
Price: 67.00 USD
Availability: InStock
Rating: 4.9 (1197 reviews)

Lipid 14% Vitamin C Enhanced Radiance Serum Full Details

Size

C-Tetra® Luxe 30ml C-Tetra® Luxe (Travel Size) 8ml

Product variants

C-Tetra® Luxe

KEY BENEFITS

Instant Skin Youthfulness

Boosted with optimised red ginseng for proven skin-brightening and youth-boosting power.
Dark Spot Reduction

Delivers powerful, clinically proven action on the appearance of dark spots.
Total Skin Nourishment

Enhanced with squalane and vitamin F for deep moisturisation and clinically proven skin barrier support.

PROVEN RESULTS

BEFORE AFTER 8 WEEKS

1 hour to visibly brighter, more youthful-looking skin*
7 days to improved skin radiance*
81% agree visible hyperpigmentation had reduced in just 4 weeks*
94% noticed smoother and softer skin after just 1 use*
86% reported it was the best vitamin C serum they had ever used*

*Proven via independent clinical study on C-Tetra Luxe conducted over 4 weeks on 36 participants

HOW TO USE

Step 1

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

Step 2

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

LOVED & RECOMMENDED

Features Writer

Your skin needs this like the desert needs the rain!

POLLY VERNON

Features Writer - The Times
Luxurious and non-irritating...I love this product!

BRIAN R

Verified Medik8 Customer

KEY INGREDIENTS

14% Stabilised Vitamin C (tetrahexyldecyl ascorbate)

A low-irritation form of vitamin C that delivers exceptional antioxidant protection against harmful free radical damage while supporting collagen production for a visibly even, more youthful-looking complexion.
Squalane

An almost skin-identical lipid which helps to support the natural skin barrier by nourishing the complexion.
Maracuja (pronounced 'marra-KU-ja') Oil

Naturally rich in nutrients and fatty acids, maracuja oil deeply nourishes your skin while providing additional antioxidant protection against free radical damage.
Optimised Red Ginseng

Boosts the serum’s brightening powers while stimulating collagen production for more youthful-looking skin.
Vitamin E

A powerful antioxidant that provides additional antioxidant protection against the ageing effects of free radicals. It also helps to boost the power of vitamin C for optimum visible results.
Full Ingredients

THE SCIENCE BEHIND THE FORMULA

C-Tetra Luxe is the pinnacle of our C-Tetra range, containing 14% tetrahexyldecyl ascorbate; double that of our original C-Tetra serum. It also boasts an infusion of radiance-boosting antioxidants delivered in a nourishing squalane base, making it the perfect all-rounder within our vitamin C range. We recommend this for the majority of skin types including those looking for supercharged age-defying results, as well as drier and dehydrated skin types. C-Tetra Luxe is unique as it remains gentle on the skin despite its high concentration of vitamin C.

GOOD TO KNOW

DERMATOLOGICALLY TESTED
CLINICALLY PROVEN FORMULA
NO ARTIFICAL FRAGRANCE
NO SYNTHETIC COLOURS
PARABEN FREE
ALCOHOL FREE
CERTIFIED BY THE VEGAN SOCIETY

FAQS

Can I use C-Tetra Luxe if I'm pregnant or breastfeeding?

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As general guidance, this product does not contain any ingredients which we would recommend to avoid during pregnancy, unless advised by your doctor.
What vitamin C strength is C-Tetra Luxe?

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C-Tetra Luxe contains 14% stabilised vitamin C (tetrahexyldecyl ascorbate).
Can I use a vitamin C serum alongside vitamin A?

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Absolutely. In fact we recommend it as part of our pioneering CSA Philosophy which champions vitamin C plus sunscreen by day, vitamin A by night as the simple secret to glowing, youthful-looking skin.
Can I layer C-Tetra Luxe with Clarity Peptides in the morning?

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Yes, you can. We would recommend applying C-Tetra Luxe first (an oil-based serum), followed by Clarity Peptides (an emulsion-based serum).

C-Tetra® Luxe

DERMATOLOGIST RECOMMENDED

CLINICAL RESULTS

AGE-DEFYING EXPERTS

MADE IN THE UK

B CORP CERTIFIED

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C-Tetra® Luxe

Lipid 14% Vitamin C Enhanced Radiance Serum Full Details

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KEY BENEFITS

Instant Skin Youthfulness

Dark Spot Reduction

Total Skin Nourishment

PROVEN RESULTS

HOW TO USE

Step 1

Step 2

LOVED & RECOMMENDED

KEY INGREDIENTS

THE SCIENCE BEHIND THE FORMULA

GOOD TO KNOW

FAQS

Can I use C-Tetra Luxe if I'm pregnant or breastfeeding?

What vitamin C strength is C-Tetra Luxe?

Can I use a vitamin C serum alongside vitamin A?

Can I layer C-Tetra Luxe with Clarity Peptides in the morning?

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