Restore your skin's natural luminosity with Medik8 C-Tetra. This award-winning, lightweight daily serum is the perfect introduction to antioxidant skincare, designed to combat the visible signs of ageing while providing a brilliant, healthy glow.
Formulated with a stabilised, lipid-soluble form of Vitamin C, it effortlessly penetrates the skin's defence barrier to deliver deep-seated protection against environmental stressors without the irritation often associated with traditional ascorbic acid.
Key Benefits
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Radiance Boosting: Features 100% stable Tetrahexyldecyl Ascorbate (Vitamin C) to visibly brighten dull skin and even out skin tone, helping to fade the appearance of dark spots and hyperpigmentation.
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Antioxidant Protection: Works in synergy with Vitamin E to shield the complexion from the damaging effects of free radicals and pollution, effectively preventing premature skin ageing.
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Youthful Texture: Stimulates natural collagen production to help plump the skin, smoothing the appearance of fine lines and wrinkles for a more refined, supple finish.
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Fast-Absorbing & Nourishing: The water-free, jojoba-infused oil formula sinks instantly into the skin, providing a boost of hydration and a velvety-soft feel that serves as a perfect base for sunscreen or makeup.
Size and packaging
- Size: 30ml
- Boxed dimensions: 2.6 x 5.1 x 11.6 cm
- Shipping weight: approx. 90 g
Full ingredients (INCI)
Simmondsia Chinensis (Jojoba) Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Citrus Grandis (Grapefruit) Peel Oil, Tocopheryl Acetate, PPG-12/SMDI Copolymer, Limonene, Citral, Linalool, Geraniol.
Formulations are updated from time to time. Please check the ingredient list printed on the pack you receive before use.
Safety
For external use only. Avoid direct contact with the eyes. Discontinue use if irritation occurs. Patch test before first use. Keep out of reach of children.
FAQ
When should I apply Medik8 C-Tetra?
Apply in the morning after cleansing, before your moisturiser and sunscreen, as part of Medik8's CSA routine: vitamin C by day, sunscreen, and vitamin A at night. Always finish with SPF.
Can I use C-Tetra with retinal?
Yes. Medik8's CSA routine pairs vitamin C in the morning with a vitamin A such as Crystal Retinal in the evening. Introduce new products one at a time and patch test first.
How long will a bottle last?
It depends on how much you apply and how often. Follow the directions on the pack and use the 30ml size as a guide.
Is this genuine, official UK stock?
Yes. MedSkin Studios is an authorised Medik8 stockist, and all products are supplied through official channels.
Related: C-Tetra Advanced | C-Tetra Luxe | C-Tetra Cream | Super C Ferulic | Daily Radiance Vitamin C
