C-Tetra® Advanced

NZ$164.45

Step up your antioxidant game with the C-Tetra Advanced, a potent 20% vitamin C serum designed to energise and protect skin each morning. This lightweight, skin-awakening emulsion glides on like a dream, delivering a daily dose of brightness, hydration, and resilience.   
This advanced formula combines Medik8’s stabilised vitamin C (Tetrahexyldecyl Ascorbate) with powerhouse antioxidants like acetyl zingerone and next-gen phyto exosomes. Together, they boost radiance, visibly smooth texture, support the skin barrier and provide defence against pollution and environmental stress.

How It Works

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

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

  • Skin Barrier Support & Enhanced Resilience - powerful phyto exosomes work to reinforce the skin’s natural defence system, deliver replenishing bioactives to skin cells rapidly & effectively, ensuring 0% barrier disruption.[1]

  • 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]

  • 90% reduction 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.

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

  • CLINICALLY PROVEN

  • ARTIFICIAL FRAGRANCE FREE

  • DERMATOLOGICALLY TESTED

  • PROVEN GENTLE FORMULA

  • CERTIFIED BY THE VEGAN SOCIETY

  • NON-COMEDOGENIC

  • TESTED ON ALL SKIN TYPES & TONES

Step up your antioxidant game with the C-Tetra Advanced, a potent 20% vitamin C serum designed to energise and protect skin each morning. This lightweight, skin-awakening emulsion glides on like a dream, delivering a daily dose of brightness, hydration, and resilience.   
This advanced formula combines Medik8’s stabilised vitamin C (Tetrahexyldecyl Ascorbate) with powerhouse antioxidants like acetyl zingerone and next-gen phyto exosomes. Together, they boost radiance, visibly smooth texture, support the skin barrier and provide defence against pollution and environmental stress.

How It Works

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

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

  • Skin Barrier Support & Enhanced Resilience - powerful phyto exosomes work to reinforce the skin’s natural defence system, deliver replenishing bioactives to skin cells rapidly & effectively, ensuring 0% barrier disruption.[1]

  • 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]

  • 90% reduction 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.

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

  • CLINICALLY PROVEN

  • ARTIFICIAL FRAGRANCE FREE

  • DERMATOLOGICALLY TESTED

  • PROVEN GENTLE FORMULA

  • CERTIFIED BY THE VEGAN SOCIETY

  • NON-COMEDOGENIC

  • TESTED ON ALL SKIN TYPES & TONES