C-Tetra Liquid Vitamin C Antioxidant Serum by Medik8
Please note we are unable to ship Medik8 products to Europe at this time.
Medik8's cult-favourite vitamin C serum featuring tetrahexyldecyl ascorbate, a gentle form of vitamin C. Perfect for those who are new to using vitamin C in their skincare routine.
Tetrahexyldecyl ascorbate is an oil soluble, 100% stable form of vitamin C which remains freshly potent from the very first use to final drop. A powerful antioxidant, it's protective qualities are reinforced with vitamin E. Combined, these actives help to tackle sun and pollution-induced damage.
C-Tetra minimises the appearance of all signs of skin ageing. The jojoba-based, lightweight formula with an uplifting citrus scent, absorbs rapidly to leave skin looking illuminated, refreshed and youthful.
Medik8 recommend a simple, highly effective anti-ageing strategy of using vitamin C and sunscreen in the morning and vitamin A at night. This strategy is called: CSA.
- Contains tetrahexyldecyl ascorbate, a stable and gentle yet effective form of vitamin C
- Enhances skin radiance
- Antioxidant protection
- Minimises the appearance of fine lines and wrinkles
- Combats sun and pollution damage
SIMMONDSIA CHINENSIS (JOJOBA) SEED OIL, CYCLOPENTASILOXANE, CYCLOHEXASILOXANE, TETRAHEXYLDECYL ASCORBATE, TOCOPHERYL ACETATE, PPG-12/SMDI COPOLYMER, CITRUS GRANDIS (GRAPEFRUIT) PEEL OIL, LIMONENE.
How to Apply
After cleansing skin in the morning, apply 4 drops across the face, neck and décolletage. Leave to absorb before applying your moisturiser.
Free when you spend €50
Receive your order in 5-7 working days* (Please note, during Sale periods and promotional offers this may take up to 7 working days).
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If you'd like to send your order as a gift, we can add a beautiful finishing touch with our gift wrap. Choose complimentary gift wrap at checkout.
*This option is available for all UK Mainland addresses, excluding the Scottish Highlands and other parts of Scotland.
Achieve healthy, beautiful skin with Medik8. Now available at Space NK, its science-backed formulas are 100% vegan and cruelty-free.
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What other customers think
C-Tetra Liquid Vitamin C Antioxidant Serum is rated
Rated 3 out of
Oil based vitamin C
I bought this a while ago to deal with the pigmentation I get in summer months. I really didnt like that it was an oil - I thought it was going to be a serum. Its also not easily absorbed and you have to wait for it to warm up to be able to spread across the face. I am not really sure if its done anything to my skin - havent seen any huge changes.
Date published: 2021-01-12
Rated 5 out of
One of my fav vitamin C serums, light and effective!
One of my favourite products from Medik8. Feels very nourishing and yet not too heavy or oily. It is light, applies well and sinks into the skin really well. I was able to apply make up over it and it worked really well under make up too. I will definitely recommend this product.
Date published: 2021-01-10
Rated 5 out of
I love this
I adore this serum - it is incredibly light and layers beautifully, it doesn't feel gritty like so many vitamin Cs so. It has a watery/oily texture, and feels very nourishing. It has a lovely citrus scent. Its my favourite vitamin C product that I have tried so far, I will buy this again and again.
Date published: 2021-01-06
Rated 3 out of
Not a Serum Texture
I bought this product as I adore the Hydr8 B5 Serum but unfortunately I was disappointed. I really wanted the texture to be a serum as this is called a serum but this is more like water in a bottle so when you apply it just runs all down your face. This product does smell amazing but I will be returning to my original product.
Date published: 2021-01-04
Rated 4 out of
Lovely and non greasy
This is a sumptuous, lightweight, silky-soft serum that packs a punch. Application is a dream; unlike other serums that I’ve used in this price range, this isn’t tacky and doesn’t leave my skin feeling tight. It’s smooth, gives my skin an instant boost and leaves it feeling soft and radiant. I leave it on for 20 minutes and let it absorb fully, before applying moisturiser. The smell is citrus-like but not overwhelming. A word of warning - it has a very thin, “watery” consistency, so don’t drop the bottle or you’ll have nothing left!
Date published: 2021-01-01