Medik8 C-Tetra Advanced 30ml
C-Tetra Advanced 20% Vitamin C Serum with Phyto Exosomes, Next-Generation Antioxidant Brightening Formula.
100% Authentic • Authorised UK Stockist • Expert Advice • Fast Tracked UK Delivery
Description
Accelerate skin radiance and target visible signs of ageing with C-Tetra Advanced, Medik8’s most powerful vitamin C innovation yet. Clinically proven to brighten skin and visibly smooth fine lines and wrinkles in just 7 days¹, this high-performance antioxidant serum works with your skin barrier, not against it.
Powered by 20% stabilised vitamin C (Tetrahexyldecyl Ascorbate), it delivers next-generation brightening, antioxidant protection, and age-defying benefits with 0% barrier disruption¹.
• 20% Stabilised Vitamin C (Tetrahexyldecyl Ascorbate): Potent, stable form of vitamin C for brightening and collagen support.• Phyto Exosomes: Plant-derived vesicles that boost resilience and repair.• Acetyl Zingerone: Advanced antioxidant that defends against environmental ageing.• Squalane & Hyaluronic Acid: Replenish hydration and maintain a supple, smooth complexion.
Key Benefits:
Brightens dull, uneven skin tone
Reduces visible wrinkles and fine lines
Protects against free radical damage
Hydrates and strengthens the skin barrier
Clinically proven results within 7 days¹
How to use
Apply 2–3 pumps to the face, neck and décolletage each morning after cleansing. Follow with moisturiser and finish with broad-spectrum SPF.
Ingredients (INCI)
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.
Expert-selected by The Skin Bay to work alongside Medik8 - both formulated to complement each other for enhanced results.
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Your questions answered
Are your products genuine?
Yes. Everything we sell is 100% genuine, sourced from the brand or authorised UK suppliers.
How fast is delivery?
Every order ships from the UK with Royal Mail, tracked and insured. Order by 4pm Monday to Friday for same-day dispatch.
- Royal Mail 48: 2 to 3 business days, £5.99
- Royal Mail 24: 1 to 2 business days, £8.00
- Special Delivery: guaranteed next working day by 7pm, £12.00
Free delivery on orders over £100 (UK mainland). Full details on our delivery page.
What is your returns policy?
Unopened items can be returned within our standard returns window. See our returns page for details.
Do you offer rewards?
Yes. Earn Bay Points on every order to redeem against future purchases.
Need help choosing?
Our team can help you build the right routine. Reach out any time and we will point you in the right direction.
