Medik8 C-Tetra® Advanced – 20% Vitamin C Serum

Regular price: £65.00
Regular price: ~~£72.00~~
Sale price: £65.00

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An advanced morning antioxidant serum formulated with 20% stabilised vitamin C, phyto exosomes and antioxidant support.

Key benefits

Supports a brighter, more radiant-looking complexion
Helps maintain a smooth, refined skin appearance
Provides daily antioxidant defence against environmental stressors

Skin type and experience level

Suitable for established vitamin C users looking for a high-strength antioxidant serum.

How to use

Apply in the morning after cleansing, then follow with moisturiser and broad-spectrum sunscreen.

Why Dr Mo recommends it

A high-strength vitamin C option for routines that already include well-tolerated active skincare.

Introduce active skincare gradually. Maintain good hydration and reduce frequency if dryness or irritation develops. Avoid direct contact with the eyes.

HOW TO USE

First-time use

If you're new to C-Tetra Advanced, we recommend a patch test at least 24 hours before first use.

How to use

Apply as part of your morning skincare routine. Massage 2-3 pumps across the face, neck and décolletage. Follow with moisturiser and always finish with sunscreen.

KEY BENEFITS

Dramatic Skin Brightening
Clinically proven to visibly brighten skin and even tone in 7 days for a radiant, luminous complexion. [1]

Enhanced Skin Barrier Support
Powerful phyto exosomes deliver replenishing bioactives to skin cells rapidly & effectively, ensuring 0% barrier disruption. [1]

Premature Skin Ageing Defence
Shields skin from damaging free radicals, pollution, and daily environmental stressors to help defend against premature skin ageing.

Smooth & Even Complexion
Clinically proven to visibly improve skin smoothness and texture in 7 days, leaving a soft, polished finish. [1]

Lightweight Finish
The fast-absorbing gel-serum texture hydrates, smooths, and primes, leaving skin instantly refreshed and ready for the day ahead.

KEY INGREDIENTS

20% Stabilised Vitamin C (Tetrahexyldecyl Ascorbate)
A highly potent yet gentle form of vitamin C for dramatic skin brightening and powerful antioxidant protection against premature skin ageing.

Phyto Exosomes
Encapsulated by nature, our phyto exosomes intelligently deliver proteins, lipids, and messenger molecules to skin cells. Together, alongside our supercharged vitamin C, they help prevent & reduce premature skin ageing by supporting healthier-looking, more resilient skin.

Acetyl Zingerone (pronounced ‘a-sea-tul’)
A super-antioxidant that works synergistically with vitamin C, enhancing its efficacy while neutralising ageing free radicals and shielding skin from environmental stressors.

Hyaluronic Acid
Draws moisture into the skin to instantly plump and deeply hydrate for a soft, supple complexion.

N-Acetyl Glucosamine (NAG)
A barrier-supporting, gentle, skin-refiner that smooths the look of pores while helping to increase the skin’s own natural hyaluronic acid levels over time.

GOOD TO KNOW

CLINICALLY PROVEN

ARTIFICIAL FRAGRANCE FREE

DERMATOLOGICALLY TESTED

PROVEN GENTLE FORMULA

CERTIFIED BY THE VEGAN SOCIETY

NON-COMEDOGENIC

TESTED ON ALL SKIN TYPES & TONES