C-Tetra Advanced by Medik8 – a high-performance next-generation age-defying serum with 20% stabilised vitamin C, created to visibly brighten the skin tone, improve skin texture and provide daily antioxidant defence. The formula helps restore radiance, freshness and a more even, well-cared-for appearance without harshly affecting the skin barrier.

The serum combines powerful lipid-soluble vitamin C with phyto exosomes, acetyl zingerone and N-acetyl glucosamine. This complex helps protect the skin from free radicals, pollution and external stressors while supporting barrier function and a smoother-looking skin texture.

C-Tetra Advanced has a lightweight gel-serum texture that absorbs quickly, hydrates, smooths and prepares the skin for daytime skincare. In just 7 days, the skin looks brighter, smoother and more even, while the appearance of wrinkles is visibly reduced.

How the active ingredients work

• 20% Stabilised Vitamin C: a powerful yet gentle form of vitamin C, designed to brighten the skin tone, boost radiance and defend against premature signs of ageing.
• Phyto Exosomes: help deliver valuable bioactive components to the skin, supporting resilience, recovery and a healthier-looking appearance.
• Acetyl Zingerone: a super-antioxidant that enhances the action of vitamin C and helps neutralise free radicals.
• N-Acetyl Glucosamine: supports the skin barrier, improves skin smoothness and helps reduce the appearance of pores.

Who C-Tetra Advanced is suitable for: all skin types, especially dull tone, uneven texture, early and visible signs of ageing, loss of radiance and the need for daily antioxidant defence.

Size: 30 ml

In the morning, apply 2-3 pumps of C-Tetra Advanced to cleansed skin on the face, neck and décolletage. Gently massage until fully absorbed. Follow with moisturiser and always finish with sunscreen.

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