Medik8C-Tetra Luxe
Product Description
Boost your skin's radiance each morning with Medik8's C-Tetra Luxe - clinically proven to reduce the appearance of wrinkles and hyperpigmentation in just 4 weeks.*
Working to boost visible radiance and support your skin barrier, C-Tetra Luxe features twice the amount of vitamin C (14%) compared to Medik8's original C-Tetra serum. Formulated with a stabilised and potent form of vitamin C ( tetrahexyldecyl ascorbate), C-Tetra Luxe gives the skin a healthy glow after just 1 use*; all while providing the skin with a gentle, nourishing experience.
Lightweight and velvety-soft in texture, 81% reported C-Tetra Luxe was the best vitamin C serum they had ever used.*
This is the ideal vitamin C serum for those looking for enhanced skin radiance and antioxidant protection alongside deep nourishment.
*Proven via independent clinical study on C-Tetra Luxe conducted over 4 weeks on 36 participants
KEY BENEFITS
Instant Skin Youthfulness
Enhanced with optimised red ginseng for proven youth-boosting bower and visibly brighter, more youthful-looking skin in 1 hour.*
*Proven via independent clinical study on C-Tetra Luxe conducted over 4 weeks on 36 participants
Dark Spot Reduction
Delivers potent, clinically proven action on the appearance of dark spots. 81% agree visible hyperpigmentation had reduced in just 4 weeks*
*Proven via independent clinical study on C-Tetra Luxe conducted over 4 weeks on 36 participants
Total Skin Nourishment
The addition of vitamin F and squalane provides deep moisturisation and clinically proven skin barrier support. 94% noticed smoother and softer skin after just 1 use*
*Proven via independent clinical study on C-Tetra Luxe conducted over 4 weeks on 36 participants
KEY INGREDIENTS
Stabilised Vitamin C (tetrahexyldecyl ascorbate)
This stable, low-irritation form of vitamin C is incredibly effective on the skin; delivering exceptional protection against ageing free radicals. Supporting collagen production and brightening the skin tone, it leaves the complexion visibly more even, radiant and youthful-looking.
Squalane
A near skin-identical lipid that helps to support the skin's natural barrier for a nourished complexion.
Maracuja Oil
Rich in fatty acids and nutrients, maracuja oil provides your skin with antioxidant protection against free radical damage, while deeply nourishing your complexion.
Optimised Red Ginseng
Stimulates collagen production and boosts the serum's brightening powers for youthful-looking skin.
Vitamin E
Rich in antioxidants, vitamin E helps to protect the skin against ageing free radicals. It also helps to boost the power of vitamin C for maximum visible results.
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.
How to Layer C-Tetra Luxe
AM: In your morning skincare routine, apply C-Tetra Luxe after cleansing and toning. Always follow with sunscreen.
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
Working to boost visible radiance and support your skin barrier, C-Tetra Luxe features twice the amount of vitamin C (14%) compared to Medik8's original C-Tetra serum. Formulated with a stabilised and potent form of vitamin C ( tetrahexyldecyl ascorbate), C-Tetra Luxe gives the skin a healthy glow after just 1 use*; all while providing the skin with a gentle, nourishing experience.
Lightweight and velvety-soft in texture, 81% reported C-Tetra Luxe was the best vitamin C serum they had ever used.*
This is the ideal vitamin C serum for those looking for enhanced skin radiance and antioxidant protection alongside deep nourishment.
*Proven via independent clinical study on C-Tetra Luxe conducted over 4 weeks on 36 participants
KEY BENEFITS
Instant Skin Youthfulness
Enhanced with optimised red ginseng for proven youth-boosting bower and visibly brighter, more youthful-looking skin in 1 hour.*
*Proven via independent clinical study on C-Tetra Luxe conducted over 4 weeks on 36 participants
Dark Spot Reduction
Delivers potent, clinically proven action on the appearance of dark spots. 81% agree visible hyperpigmentation had reduced in just 4 weeks*
*Proven via independent clinical study on C-Tetra Luxe conducted over 4 weeks on 36 participants
Total Skin Nourishment
The addition of vitamin F and squalane provides deep moisturisation and clinically proven skin barrier support. 94% noticed smoother and softer skin after just 1 use*
*Proven via independent clinical study on C-Tetra Luxe conducted over 4 weeks on 36 participants
KEY INGREDIENTS
Stabilised Vitamin C (tetrahexyldecyl ascorbate)
This stable, low-irritation form of vitamin C is incredibly effective on the skin; delivering exceptional protection against ageing free radicals. Supporting collagen production and brightening the skin tone, it leaves the complexion visibly more even, radiant and youthful-looking.
Squalane
A near skin-identical lipid that helps to support the skin's natural barrier for a nourished complexion.
Maracuja Oil
Rich in fatty acids and nutrients, maracuja oil provides your skin with antioxidant protection against free radical damage, while deeply nourishing your complexion.
Optimised Red Ginseng
Stimulates collagen production and boosts the serum's brightening powers for youthful-looking skin.
Vitamin E
Rich in antioxidants, vitamin E helps to protect the skin against ageing free radicals. It also helps to boost the power of vitamin C for maximum visible results.
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.
How to Layer C-Tetra Luxe
AM: In your morning skincare routine, apply C-Tetra Luxe after cleansing and toning. Always follow with sunscreen.
Directions
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.
How to Layer C-Tetra Luxe
AM: In your morning skincare routine, apply C-Tetra Luxe after cleansing and toning. Always follow with sunscreen.
Test results
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
More information
*Product packaging may vary by region\n\nIngredients
Squalane, Simmondsia Chinensis (Jojoba) Seed Oil, Tetrahexyldecyl Ascorbate, Dimethicone, Candida Bombicola/Glucose/Methyl Rapeseedate Ferment, Citrus Grandis (Grapefruit) Peel Oil, Ethyl Linoleate, Passiflora Edulis (Passion Fruit) Seed Oil, Tocopheryl Acetate, Limonene, Helianthus Annuus (Sunflower) Seed Oil, Olea Europaea (Olive) Fruit Oil, Panax Ginseng Root Oil, Prunus Amygdalus Dulcis Oil, Prunus Armeniaca (Apricot) Kernel Oil, PPG-12/SMDI Copolymer, Citral, Linalool, Geraniol.
This list of ingredients may be subject to change, please consult the packaging of the product purchased.
See more...
Rated 4 out of
5
by
Margje from
Great product, faulty pumps
I love the products themselves, but the packaging of both the Vitamin C and Peptide pumps is disappointing. They often squirt product in unexpected directions, leading to waste and occasionally staining clothing.
Would Medik8 consider reviewing the pump design to make dispensing more controlled and reliable? It would make a real difference to the user experience.
Date published: 2026-11-01
Rated 5 out of
5
by
Karin B. from
Impressive serum
[This review was collected as part of a promotion.] I love all the vitamin c range but especially the tetra luxe. It feels amazing on the face and never oily just smooth. It makes such a difference to my complexion and my skin is always brighter and clearer after using it. I use it after cleansing then follow with moisturiser.
Date published: 2026-10-30
Rated 5 out of
5
by
Hannah C. from
Great addition to skin care Routine
[This review was collected as part of a promotion.] Advised to add this to my skincare routine and am very pleased with the results, having received compliments about how bright and glowing my face looks.
Date published: 2026-10-30
Rated 5 out of
5
by
Bianca M. from
Super serum
[This review was collected as part of a promotion.] I have used this serum for about a half a year now. I didn’t realize how much I liked it until it ran out! It’s such luxury part of my daily routine that keeps my skin feeling bright and looking amazing. I’ve used it in combination with azaleic acid to reduce my melasma and it’s been very effective.
Date published: 2026-10-30
Rated 5 out of
5
by
Anna W. from
Best serum
[This review was collected as part of a promotion.] The best vitamin c serum ever. I love it, my skin feels so great and it feels very luxurious
Date published: 2026-10-30
Rated 5 out of
5
by
Lorraine B. from
Strong skin
[This review was collected as part of a promotion.] Since using the PDRn & liquid peptides skin is feeling so strong. Adding vit C every day leaves my skin feeling soft and supple and fully hydrated.
Date published: 2026-10-28
Rated 5 out of
5
by
Stephanie T. from
I love this lightweight serum
[This review was collected as part of a promotion.] I've been using this serum for at least ten years and I love it. It isn't at all greasy and sinks into my skin within seconds, leaving it feeling smooth and silky. I've been told I have lovely skin for my age and I'm sure this serum has contributed to this.
Date published: 2026-10-28
Rated 5 out of
5
by
Iryna S. from
C-Tetra® Luxe
[This review was collected as part of a promotion.] I absolutely love C-Tetra® Luxe! It has a beautiful lightweight texture and leaves my skin feeling incredibly soft, smooth and hydrated. My complexion looks brighter and more radiant, and my skin feels healthier and more even with regular use. I also love that it feels luxurious without being heavy or sticky.
Date published: 2026-10-28
Help & Information
About
More From Sephora
Country Settings
United Kingdom- 4.2★★★★★
Download the Sephora App
