Medik8 Vitamin C Tetra Serum 30ml
Get 210 LF Beauty Plus+ Points
£42.00
Or 4 interest free payments of £10.50 with
In stock | Usually dispatched within 24 hours

The Medik8 C-Tetra Serum delivers powerful antioxidant protection against environmental stressors while minimising the look of uneven skin tone for a visibly brighter finish.
Infused with a stable form of vitamin C, the lightweight serum helps to reduce the appearance of unwanted pigmentation. Vitamin E enhances the formula to nourish the skin with a potent burst of moisture, subsequently plumping the appearance of fine lines for a smoother-looking finish. The brightening serum leaves skin looking more radiant and supple in just seven days*.
*Proven via independent consumer study on C-Tetra conducted over 4 weeks on 52 participants with sensitive skin
Proven Results:
- After seven days the skin appears more radiant*
- After seven days the skin is visibly brighter and smoother *
- 96% of sensitive skin types agreed C-Tetra was gentle on the skin*
- After four weeks skin looks visibly reduced fine lines and dark spots*
- 90% agree skin feels instantly softer*
*Proven via independent consumer study conducted over 4 weeks on 52 participants with sensitive skin.
- ☼ AM
- When to Use: After cleansing.
- Recommended Amount: 4 drops.
- Application: Massage across the face, neck and décolletage. Leave to absorb before applying sunscreen.
- Routine: Follow with SPF.
- Vitamin C: A potent antioxidant with brightening properties
- Vitamin E: A humectant, emollient and antioxidant common in skincare and haircare products
Simmondsia Chinensis (Jojoba) Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Citrus Grandis (Grapefruit) Peel Oil, Tocopheryl Acetate, PPG-12/SMDI Copolymer, Limonene, Citral, Linalool, Geraniol.
For the latest information, it is recommended to review the ingredient list printed on the packaging of the product prior to usage or consumption.
Frequently Bought Together

This item
Medik8 Vitamin C Tetra Serum 30ml
£42.00
Other Customers Bought
Customer Reviews
5 stars rating 507 reviews
4 stars rating 78 reviews
3 stars rating 12 reviews
2 stars rating 8 reviews
1 stars rating 9 reviews
Top Customer Reviews
We really appreciate your thoughts! Our customer reviews on LOOKFANTASTIC are as real and authentic as our love for beauty, and we’re proud that they belong just to you and don’t reflect the opinions of us or The Hut Group.
Fabulous
My skin looks incredible with this product. It positively glows easily absorbed, smells lovely, the difference is amazing. Will definitely buy again
by Susan Verified Purchase
Was this helpful?
Amazing
I wish I had started using this serum ages ago! I love it and I have now added it to Medik8 regimine I am now doing
by Stephanie Verified Purchase
Was this helpful?
Wow
To keep it simple - Medik8, where have you been all my life. I am a Dermalogica devotee, but have started adding in Medik8 products to my routine and they are now here to stay.
by Samantha Verified Purchase
Was this helpful?
Impressed
I have tried a couple of Vit C products before Medik8 and this is fabulous. Really only need a few drops for face and neck. I use it on days that I don’t wear make up. My 60 year old skin loves this.
by Wendy Verified Purchase
Was this helpful?
Fantastic Serum
Love this serum. It makes my skin so soft and smooth and you only need the tiniest amount. I use it every morning before my moisturiser but always let it sink in for a few minutes first.
by Nicola Verified Purchase
Was this helpful?
Repurchased!
I showed my sis this product with a drop on her hand and she genuinely couldn’t believe the difference it’s a little miracle in a bottle. I use this after hydraulic acid and before moisturiser Mornings only and it’s just beautiful! Makes my skin care routine a pleasure and I’m now on my second bottle. I love the zesty smell and how it absorbs into the skin leaving me glowing! I’ve never liked my bare skin until now - game changer
by Lisa Verified Purchase
Was this helpful?
Amazing!!
First of all my skin is dry with oily T and i have hormonal acne from time to time. I received this serum in a beauty box. I was skeptical about trying it because i had tried vit c from another brand and caused me pimples. After only one apply i saw so much difference on my skin! More bright and more clear. Now i wear it every day and it has completely changed my skin! The smell is amazing, like fresh oranges!! Also absorbs quickly and you can apply your moisturizer after that. I've already ordered the bigger size! So happy with this product. This is my personal opinion, this doesn't mean that the product will affect everyone's skin the same!
by THEOPIA Verified Purchase
Was this helpful?
Gorgeous Vit C
This is my 3rd bottle of C Tetra. It’s a gorgeous Vitamin C. Although it’s oil based it absorbs beautifully and gives a lovely glow. It’s not irritating on the skin which I find with other Vitamin C serums. Leaves my skin looking and feeling youthful.
by Sharon Verified Purchase
Was this helpful?
Amazing Serum!
I love this Vitamin C serum - it smells lovely (like oranges), doesn't feel sticky at all and soaks in well. I use it in the AM and whilst it feels a little greasy upon application it absorbs well which is great as I have to do a quick AM routine. It works well under other products if I decide to use another serum on top or just my normal moisturiser. My skin does look a little brighter and generally healthy. Very happy with this serum and have already repurchased whilst it was on offer, although I don't think I will need to open the new bottle for a while as a little really goes a long way!
by Emma Verified Purchase
Was this helpful?
Sublime
My skin looks glowing and several people asked if I did injections, but I just used this Vitamin C serum + day cream and the the same brand night treatment. After this vitamin C serum my face looks visibly fresher straight after the application but it’s not heave, the skin can breathe. I would wait around 40 min though before applying a make up base on it.
by Olga Verified Purchase
Was this helpful?