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Medik8 C-Tetra Advanced 30ml

Medik8 C-Tetra Advanced 30ml

$109.39
$143.00 $109.39
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pay in 4 installments of $27.34

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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 enhanced skin resilience 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 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.

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.

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Product Information

Directions

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.

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

Australian Orders

Australian OrdersAustralia Post Standard Delivery* (2-7 Business Days

Orders under $50-$7.95

Orders over $50 Free

Australia Post Express Delivery** (1-3 Business Days)

Orders under $50 $9.90

Orders over $50 $5.95

 Postage Insurance$2.95

Complete protection for loss or damage during transit*

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Returns & Refunds

We accept returns on unused, unopened items within 30 days of delivery.
Faulty, damaged or reaction-related returns may be eligible for a refund, exchange or store credit — conditions apply.

Please note:
- Products must be in original condition
- Return shipping costs are the customer’s responsibility (unless the item is faulty or sent in error)
- Makeup and fragrance are not eligible for change-of-mind returns

Contact us at customerservice@ry.com.au to request a return.
View our full Returns & Refunds Policy Here

One-on-One Free Video Skin Consultation

Need expert advice? Speak face-to-face with a qualified skin therapist in real time — from the comfort of your home.

Our free live video consultation connects you with a trained professional who can assess your skin, answer your questions, and recommend the right products just for you.

No bots. No pressure. Just real, personalised skincare advice.

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