Medik8 C-Tetra Advanced, 30ml

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

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.

PROVEN RESULTS

7 days to visibly brighter skin[1]

7 days to visibly reduced wrinkles[1]

0% barrier disruption[1]

7 days to visibly smoother skin texture[1]

Reduces 90% of pollution damage to the skin’s surface[2]

[1] Proven via independent clinical study conducted over 4 weeks on 32 participants.

[2] Proven via in vitro protein carbonylation data against particulate matter pollution on the stratum corneum and epidermis.

[3] Proven via in vitro protein carbonylation study using European standard reference environmental pollutants.

How to use: 

Apply evenly in the morning after cleansing the skin, under your chosen moisturiser and sunscreen. If you are using multiple serums we recommend applying them in order of thinnest to thickest texture. Since C-Tetra Advanced is an emulsion, it should be layered on top of water and oil-based serums. This ensures your skin gets the full benefits of each product.