C-Tetra™ Luxe
C-Tetra™ Luxe
C-Tetra™ Luxe
C-Tetra™ Luxe
C-Tetra™ Luxe
C-Tetra™ Luxe
C-Tetra™ Luxe
C-Tetra™ Luxe
C-Tetra™ Luxe
C-Tetra™ Luxe
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C-Tetra™ Luxe

  • Brighten
  • |
  • Smooth
  • |
  • Nourish
Lipid 14% Vitamin C Enhanced Radiance Serum

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.
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Key Benefits
Instant Skin Youthfulness

Boosted with optimized red ginseng for proven skin-brightening and youth-boosting power.

Total Skin Nourishment

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

Dark Spot Reduction

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

Proven Results
BEFORE
AFTER 8 WEEKS
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
How to Use

First-Time Use

If you're new to C-Tetra Luxe we recommend a patch test at least 24 hours before first use. Learn how to patch test here.

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 moisturizer and sunscreen.

Uses per bottle

200
Guide to Layering
Step 1: Cleanse
Surface Radiance Cleansing Gel
Morning
Evening
Surface Radiance Cleansing Gel
Full Size (5.0 FL. OZ. (150 mL))
Step 2: Target
Liquid Peptides Advanced MP Face Serum
Morning
Evening
Liquid Peptides Advanced MP Face Serum
(1.0 FL. OZ. (30 mL))
Step 3: Brighten
C-Tetra™ Luxe
Morning
C-Tetra™ Luxe
(0)
Step 4: Renew
Crystal Retinal
Evening
Crystal Retinal
Select a 1 TUBE (1.0 FL. OZ.)
Step 5: Moisturize
Total Moisture Daily Facial Cream
Morning
Evening
Total Moisture Daily Facial Cream
Select a Size
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.

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 List of Ingredients
C-Tetra™ Luxe
Lipid 14% Vitamin C Enhanced Radiance Serum

Squalane, Simmondsia Chinensis (Jojoba) Seed Oil, Tetrahexyldecyl Ascorbate, Dimethicone, Candida Bombicola/Glucose/Methyl Rapeseedate Ferment, Citrus Grandis (Grapefruit) Peel Oil, Ethyl Linoleate, Passiflora Edulis Seed Oil, Tocopheryl Acetate, Helianthus Annuus (Sunflower) Seed Oil, Olea Europaea (Olive) Fruit Oil, Panax Ginseng Root Oil, Prunus Amygdalus (Sweet Almond) Dulcis Oil, Prunus Armeniaca (Apricot) Kernel Oil, PPG-12/SMDI Copolymer, Limonene, Citral, Linalool, Geraniol.

*Although we try our best to ensure this list of ingredients is accurate there may be product upgrades from time to time, or slight variants between different regions based on local laws, meaning the only definitive ingredient list is that which is printed on the product packaging.
  • Dermatologically tested
  • Clinically proven formula
  • No artifical fragrance
  • No synthetic colors
  • Paraben free
  • Alcohol free
  • Askmen grooming awards best vitamin c
Experts Recommended

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

DANIEL ISAACS
Chief Product Officer

Your skin needs this like the desert needs the rain!

POLLY VERNON
Features Writer - The Times / Grazia

Luxurious and non-irritating...I love this product!

BRIAN R
Verified Medik8 Customer

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Reviews

Frequently Asked Questions

Can I use C-Tetra Luxe if I'm pregnant or breastfeeding?
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?
C-Tetra Luxe contains 14% stabilized vitamin C (tetrahexyldecyl ascorbate).
Can I use a vitamin C serum alongside retinoids?
Absolutely. In fact we recommend the daily use of these 2 powerful actives as our proven pairing for more youthful-looking skin.
C-Tetra™ Luxe