Award Winner

Supercharge your skin's radiance each morning with C-Tetra Luxe, a vitamin C serum for your face clinically proven to reduce the appearance of wrinkles and dark spots 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 stabilized (and therefore very potent) form of vitamin C called tetrahexyldecyl ascorbate, which delivers proven results after just 1 use*; all with a gentle, nourishing experience for your skin.

C-Tetra™ Luxe

Name: C-Tetra™ Luxe
Brand: Medik8
SKU: P08442
Price: 69.00 USD
Availability: InStock
Rating: 4.5 (2 reviews)

Lipid 14% Vitamin C Enhanced Radiance Serum Full Details

Size: 1.0 FL. OZ. (30 mL)

Product variants

C-Tetra™ Luxe

PROVEN RESULTS

BEFORE AFTER 8 WEEKS

1 hour to visibly brighter, more youthful-looking skin*
7 days to improved skin radiance*
81% agree visible dark spots 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

KEY BENEFITS

Instant Skin Youthfulness

Boosted with optimized 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 moisturization and clinically proven skin barrier support.

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 a sunscreen.

KEY INGREDIENTS

14% Stabilized Vitamin C (tetrahexyldecyl ascorbate)

A low-irritation form of antioxidant vitamin C that works to keep the appearance of fine lines and wrinkles at bay. It also helps to visibly brighten and even the skin tone for visible dark spot reduction.
Squalane

An almost skin-identical lipid, squalane helps to replenish the skin’s natural moisture barrier while deeply moisturizing the complexion.
Maracuja (pronounced 'marra-KU-ja') Oil

Naturally rich in nutrients and fatty acids, maracuja oil deeply nourishes your skin.
Optimized Red Ginseng

Boosts the serum’s visible brightening powers for more youthful-looking skin overall.
Vitamin E

A powerful antioxidant, vitamin E works to deeply nourish and soften the complexion.
Full Ingredients

THE SCIENCE BEHIND THE FORMULA

The perfect option for supercharged skin radiance plus visible line-smoothing results.

DANIEL ISAACS Chief Product Officer

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 COLORS
PARABEN FREE
ALCOHOL FREE
ASKMEN GROOMING AWARDS BEST VITAMIN C

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% stabilized vitamin C (tetrahexyldecyl ascorbate).
Can I use a vitamin C serum alongside retinoids?

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Absolutely. In fact we recommend the daily use of these 2 powerful actives as our proven pairing for more youthful-looking skin.

SUSTAINABILITY CLAIMS

Provenance provides confidence for sustainability claims; helping to prevent ‘green-washing’ and empowering conscious consumers to purchase in line with their values. Provenance ‘Proof Points’ are all third party verified and evidenced through supply chains.

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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PROVEN RESULTS

KEY BENEFITS

Instant Skin Youthfulness

Dark Spot Reduction

Total Skin Nourishment

HOW TO USE

Step 1

Step 2

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 retinoids?

SUSTAINABILITY CLAIMS

Complete Your Regime

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