Medik8 C-Tetra Advanced

C-Tetra Advanced 20% Vitamin C Gel-Serum With Phyto Exosomes

Defend against premature skin ageing and achieve accelerated skin brightening with a next-generation combination of 20% vitamin C and skin barrier science.

Clinically proven to brighten skin and visibly improve wrinkles in 7 days with 0% barrier disruption, C-Tetra Advanced is engineered for high-performance visible brightening, skin smoothing, and daily antioxidant defence.

This intelligent ingredient complex combines potent, stabilised 20% vitamin C with restorative phyto exosomes for deep, controlled delivery and omni-antioxidant acetyl zingerone to neutralise the ageing effects of free radicals.

The result? A high-performance, age-defying vitamin C serum that works smarter, not harsher.

KEY BENEFITS

*Skin Brightening – Clinically proven to visibly brighten skin and even tone in 7 days for a radiant, luminous complexion

*Enhanced Skin Barrier Support – Powerful phyto exosomes deliver replenishing bioactives to skin cells rapidly & effectively, ensuring 0% barrier disruption

*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

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

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 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: A super-antioxidant that works synergistically with vitamin C, enhancing its efficacy while neutralising ageing free radicals and shielding skin from environmental stressors.

Multi-Weight 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.

THE SCIENCE BEHIND THE FORMULA

Traditional high-strength vitamin C serums can degrade before reaching the skin or cause irritation. C-Tetra Advanced is meticulously formulated with a 20% stabilised vitamin C complex, ensuring long-lasting potency from the first drop to the last.

Encapsulated by nature and sourced from green tea leaves, phyto exosomes are rich in proteins, lipids, and messenger molecules. Acting as intelligent micro-carriers they carry key signalling molecules, like peptides and nutrients, to send signals to skin cells to help reinforce the skin barrier for optimal skin tolerance and comfort.

Further fortified by omni-antioxidant acetyl zingerone, the next-generation formula helps shield skin from pollution-induced damage by neutralising free radicals, blocking harmful pollution particles, and strengthening the skin’s natural defences for increased skin resilience.

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