Looks like you're shopping from United States. Change your currency to USD.
Skip to main content

WANT TO CHANGE CURRENCY?

Simply select the currency you'd like to shop in below:

Medik8

C-Tetra Liquid Vitamin C Antioxidant Serum by Medik8

Details
30ml | SKU# UK200028306
£35.00

In Stock

Add to cart options

Promotions

Variations
  • Select Size
Product Actions
Product added to bag
Description

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.

Key Benefits:
  • 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
Ingredients
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.
Delivery

STANDARD DELIVERY £4
Free on all orders, over £40
Delivery within 2-4 working days.* (Please note, during Sale periods and promotional offers this may take up to 7 working days).

NEXT DAY DELIVERY £5
Free on all orders over £100*
Order before 8pm Monday - Friday, and receive your order the next working day. Orders placed over the weekend or on UK Bank Holidays will be processed the next working day**

2 HOUR DELIVERY Free for a limited time*
Receive your order within 2 hours from a local store**
Order by 4pm - find out more here
*Service is normally £8 or free when you spend £100
**Service will show at checkout if eligible

FREE CLICK & COLLECT
Order before midday and collect your order for free from your chosen store in 2-4 days.
Read more about our Click & Collect service.
Click and Collect orders can not include Pre/Back order items, these must be ordered separately.

E-GIFT CARDS
Delivered instantly by email, Free Delivery

GIFT WRAPPING
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.

About Medik8
Achieve healthy, beautiful skin with Medik8. Now available at Space NK, its science-backed formulas are 100% vegan and cruelty-free.
Item has been added to your wish list!Visit >
What other customers think
C-Tetra Liquid Vitamin C Antioxidant Serum is rated 4.7 out of 5 by 32.
Rated 5 out of 5 by from Best vitamin C serum! I have dry and sensitive skin, and I have tried a lot of vitamin C serums, and they all were so irritating. The C-Tetra serum is so smooth and works so great! I have noticed that it work really well with hyperpigmentation and post acne! Also my skin doesn’t look dull when I use this serum! Don’t forget to wear a sunscreen during the day!
Date published: 2021-01-23
Rated 5 out of 5 by from A little goes a looooong way! I love this, it smells great and leaves my skin glowing! I’ve had it since august, using 0.2ml each morning and I’ve only just run out! It’s a great price and a little really does go a long way as it’s lasted me 5 months! I will definitely be repurchasing!
Date published: 2021-01-20
Rated 5 out of 5 by from Perfectly gently vitamin c I decided to take the plunge with this serum a few weeks ago, having previously been put off by vitamin c products seeming to break out my sensitive skin. At this price point it was worth a try. I’m so pleased with the results and it absolutely has not made my skin in any way, other than giving it a lovely smooth glow. I shall definitely be continuing with this.
Date published: 2021-01-16
Rated 5 out of 5 by from Love this serum! It smells divine, feels divine, sits well under makeup and makes my skin feel amazing. I have only been using this for a month but can really see and feel the difference in my skin. It has helped brighten and improve the texture of my skin. Well worth purchasing!
Date published: 2021-01-16
Rated 5 out of 5 by from Lovely product A friend recommended this to me and it has since become part of my daily routine. A great way to add vitamin c into skincare as it absorbs quickly, has a lovely texture and smell, and works well under makeup. Makes my skin feel healthy and happy. Well worth the price.
Date published: 2021-01-16
  • y_2021, m_1, d_24, h_17
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.13
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_32
  • loc_en_GB, sid_MUK200028306, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_spacenk-en
  • bvseo_sdk, dw_cartridge, 17.1.0, p_sdk_3.2.0
  • CLOUD, getContent, 6ms
  • reviews, product
By entering your email you consent to the use by Space NK of your personal data in accordance with our T&Cs and Privacy Policy