Medik8 • C-Tetra Advanced 30ml
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[1] with 0% barrier disruption[1], 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.
BEST FOR
Dull or lacklustre skin Pigmentation or uneven tone Early signs of ageing Clients starting Vitamin C for prevention Sensitive skin needing a gentler antioxidant
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 Defense - 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.
INGREDIENTS
20% Stabilised Vitamin C (Tetrahexyldecyl Ascorbate) A high-strength yet gentle Vitamin C that visibly brightens, supports collagen and delivers powerful antioxidant protection against premature ageing.
Phyto Exosomes Nature-derived delivery vesicles that transport proteins, lipids and signalling molecules into the skin — supporting repair, resilience and overall skin longevity.
Acetyl Zingerone A next-generation super-antioxidant that enhances Vitamin C performance while neutralising free radicals and environmental stress.
Multi-Weight Hyaluronic Acid Delivers multi-depth hydration to plump, smooth and restore skin suppleness instantly and over time.
N-Acetyl Glucosamine (NAG) Refines pores, supports the skin barrier and boosts the skin’s natural hyaluronic acid production for smoother, hydrated skin.
Full Ingredients Aqua (Water), Tetrahexyldecyl Ascorbate, Isododecane, Propanediol, Acetyl Glucosamine, Squalane, Tocopherol, Acetyl Zingerone, Camellia Sinensis (Green Tea) Leaf Vesicles, Hydroxyacetophenone, Sodium Hyaluronate, Cellulose, Avena Sativa (Oat) Kernel Extract, Glycerin, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Citrus Grandis (Grapefruit) Peel Oil, Sucrose Stearate, Tetrasodium Glutamate Diacetate, Ethylhexylglycerin, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Xanthan Gum, Sodium Benzoate, Cellulose Gum, 1,2-Hexanediol, Polysorbate 60, Sorbitan Isostearate, Citric Acid, Phenoxyethanol, Citral, Linalool, Limonene
SHIPPING & RETURNS
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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.
