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Medik8 C-Tetra® Advanced
Medik8 C-Tetra® Advanced

Medik8

C-Tetra® Advanced

Skincare

€69,00

A 20% vitamin C gel-serum designed to brighten skin, even out tone and defend against everyday environmental stress. Lightweight and non-greasy, it suits all skin types, including those trying vitamin C for the first time. Pairs well with Medik8's Crystal Retinal as part of a morning-and-night routine.

Ingredients

Full 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

  • Tetrahexyldecyl ascorbate 20% (vitamin C) — a stable, gentle form of vitamin C that helps brighten skin and defends against oxidative stress.
  • Phyto exosomes — help deliver the formula's bioactives for more resilient-looking skin.
  • Acetyl zingerone — a super-antioxidant that helps boost the effectiveness of the vitamin C.
  • Sodium hyaluronate — helps hydrate and plump skin.
  • Acetyl glucosamine (NAG) — supports the skin barrier and helps refine the look of pores.

How to use

  1. Massage 2-3 pumps across face, neck and décolletage.
  2. Follow with moisturiser.
  3. Always finish with sunscreen.

FAQ

Can beginners use this?
Yes — despite its 20% concentration, the gentle THDA form of vitamin C is designed to suit all skin types, including those new to vitamin C.
How does it layer with other products?
Apply thinnest to thickest. As an emulsion, it goes over water- and oil-based serums but before moisturiser and SPF.
Can I use it with Crystal Retinal (vitamin A)?
Yes — Medik8 recommends pairing vitamin C by day with vitamin A by night as part of its CSA Philosophy.
Does it contain fragrance?
No synthetic fragrance — just a subtle, naturally derived citrus scent from a low concentration of essential oils.

Brighter. Smoother. Defended.

A 20% vitamin C gel-serum combining stabilised tetrahexyldecyl ascorbate with phyto exosomes and acetyl zingerone, designed to brighten skin and help defend against everyday environmental stress.

Suited to all skin types, including normal, combination and oily skin, and a gentle way for vitamin C beginners to start.

Recommended for:
Normal, combination and oily skin; those new to vitamin C
Skin benefits:
Brighter, more even tone; smoother texture; antioxidant defence against environmental stress; softened wrinkles
Target concerns:
Dullness, uneven tone, fine lines, oxidative stress
Texture:
Lightweight, non-greasy gel-serum
Scent:
No synthetic fragrance; subtle citrus notes from natural oils
When to use:
Morning, after cleansing and toning, before moisturiser and SPF
Size:
30ml
Medik8 C-Tetra® Advanced
  • Literally the best beauty salon in Malta - the girls are adorable, professional and always on time!

    Marion C.

  • Highly recommended. Staff is very nice and helpful.

    Tiziana C.

  • I had such a wonderful experience. The facial was incredibly relaxing and my skin feels so refreshed, smooth and glowing. I can already see a difference in my skin!

    Sharyn B.

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Frequently asked questions

How long does shipping take?

Orders are typically delivered within 1-2 business days. Our team will contact you in advance to coordinate delivery.

Is this suitable for sensitive skin?

All formulas are dermatologist tested and fragrance free unless noted on the product.