Medik8 C-Tetra Luxe - 30ml

Does your skin feel dry and dehydrated while your complexion looks dull and fine lines become more visible? Then Medik8 C-Tetra Luxe (the luxurious lipid vitamin C serum from the Skin Ageing range) is your morning step. The serum was developed specifically for those concerned with skin ageing and sun damage, and for anyone who wants to support the results of skin rejuvenation procedures such as medical needling, IPL, injectables, fillers, chemical peels and lasers. Suitable for all skin types, but especially comforting for dry and dehydrated skin.

How it works

C-Tetra Luxe contains 14% stable, non-irritating vitamin C in the form of tetrahexyldecyl ascorbate – double the amount found in the original C-Tetra. Vitamin C stimulates collagen production and protects against free radicals, leaving skin firmer and visibly more radiant. Squalane holds moisture and softens, vitamin F (ethyl linoleate) supports the skin barrier, and Amazonian maracuja (passion fruit seed) oil nourishes the skin while adding a touch of luxury. The lipid base ensures better penetration of the active ingredients.

Texture and use in your routine

A rich, oil-like texture with a fresh, subtly citrus scent that absorbs quickly without a sticky finish. Apply in the morning to cleansed skin, followed by your sunscreen such as Advanced Day Ultimate Protect SPF 50+. In the evening, apply vitamin A such as Crystal Retinal – exactly the Medik8 CSA philosophy. Prefer a lighter, oil-free feel? Choose the original C-Tetra instead.

Frequently asked questions

Which step of the CSA routine is this?

The C in C-Tetra Luxe stands for vitamin C: the morning step, followed directly by SPF. Vitamin A is used at night.

Can I combine it with Crystal Retinal?

Yes. Use C-Tetra Luxe in the morning and your retinal in the evening so both steps stay comfortable.

Is it suitable for sensitive skin?

The formula uses a stable, non-irritating form of vitamin C. If your skin is reactive, start a few times a week and build up gradually.

C-Tetra Luxe delivers 14% stable vitamin C as tetrahexyldecyl ascorbate, double the level of the original C-Tetra. This non-irritating vitamin C stimulates collagen production and protects against free radicals, helping to counteract signs of skin ageing and sun damage while making skin look visibly more radiant. The lipid base of squalane, vitamin F and maracuja oil strengthens the skin barrier, retains moisture and improves penetration of the active ingredients deep into the skin.

In the morning, apply a small amount to cleansed skin on face and neck. Massage gently using upward movements until fully absorbed, then follow with your usual moisturiser. Always finish with sun protection, such as Advanced Day Ultimate Protect SPF 50+. In the evening, use a vitamin A serum such as Crystal Retinal. If your skin is reactive, start a few times a week and build up slowly.

After a few weeks skin looks brighter and more even, fine lines appear less noticeable and texture feels refined. Dry, dehydrated skin feels immediately softer and better nourished. Results continue to build with daily use alongside sun protection.

• Vitamin C – Stimulates collagen production, protects against free radicals, and brightens the complexion
• Vitamin E – A powerful antioxidant that protects against free radicals and premature skin aging
• Jojoba oil – Rich in fatty acids, it has a soothing effect and supports skin recovery
• Squalane – Intensely hydrates and helps restore the natural skin balance
• Ginseng – Protects against free radicals, restores, and energizes.

Squalane, Simmondsia Chinensis (Jojoba) Seed Oil, Tetrahexyldecyl Ascorbate, Dimethicone, Candida Bombicola/Glucose/Methyl Rapeseedate Ferment, Citrus Grandis (Grapefruit) Peel Oil, Ethyl Linoleate, Passiflora Edulis (Passion Fruit) Seed Oil, Tocopheryl Acetate, Helianthus Annuus (Sunflower) Seed Oil, Olea Europaea (Olive) Fruit Oil, Panax Ginseng Root Oil, Prunus Amygdalus Dulcis (Sweet Almond) Oil, Prunus Armeniaca (Apricot) Kernel Oil, PPG-12/SMDI Copolymer, Limonene, Citral, Linalool, Geraniol.

The manufacturer is responsible for the composition of the product. As the composition may change, we recommend always checking the ingredients on the packaging.