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A everyday serum featuring tetrahexyldecyl ascorbate, a stabilized, low irritation form of vitamin C.
Suitable for all skin types, C-Tetra is ideal for those new to vitamin C. Tetrahexyldecyl ascorbate is an oil-soluble, super-stable form of vitamin C which retains its power throughout its use. The vitamin C is combined with co-antioxidant vitamin E. C-Tetra helps to promote a visibly brighter complexion while reducing the appearance of skin aging signs.
The lightweight, jojoba-based formula with a fresh citrus scent sinks in rapidly, leaving skin looking refreshed. Medik8 recommend a simple, effective skincare strategy of using vitamin C and sunscreen in the morning and vitamin A at night. This strategy is called: CSA.
After cleansing in the morning, apply 6 drops of C-Tetra to face, neck and décolletage. Allow to absorb before applying moisturizer.
Simmondsia Chinensis (Jojoba) Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Citrus Grandis (Grapefruit) Peel Oil, Tocopheryl Acetate, PPG-12/SMDI Copolymer, Limonene, Citral, Linalool, Geraniol.
- 30ml
- Medik8
Frequently Bought Together



Total Price: $77.00
Add both to cart
Medik8 C-Tetra Serum 30ml
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$48.00
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In stock
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4 installments of $12.00 with Klarna Learn more
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4 installments of $12.00 with afterpay Learn more
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A everyday serum featuring tetrahexyldecyl ascorbate, a stabilized, low irritation form of vitamin C.
Suitable for all skin types, C-Tetra is ideal for those new to vitamin C. Tetrahexyldecyl ascorbate is an oil-soluble, super-stable form of vitamin C which retains its power throughout its use. The vitamin C is combined with co-antioxidant vitamin E. C-Tetra helps to promote a visibly brighter complexion while reducing the appearance of skin aging signs.
The lightweight, jojoba-based formula with a fresh citrus scent sinks in rapidly, leaving skin looking refreshed. Medik8 recommend a simple, effective skincare strategy of using vitamin C and sunscreen in the morning and vitamin A at night. This strategy is called: CSA.
After cleansing in the morning, apply 6 drops of C-Tetra to face, neck and décolletage. Allow to absorb before applying moisturizer.
Simmondsia Chinensis (Jojoba) Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Citrus Grandis (Grapefruit) Peel Oil, Tocopheryl Acetate, PPG-12/SMDI Copolymer, Limonene, Citral, Linalool, Geraniol.
- 30ml
- Medik8
Frequently Bought Together



Total Price: $77.00
Add both to cart
Customer Reviews
Top Customer Reviews
Where reviews refer to beauty products or supplements, results may vary from person to person. Customer reviews are independent and do not represent the views of Dermstore.
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Had high hopes :(
I had really high hopes for this because I love Medik8's Crystal Retinal but this really irritated my skin. The moment I stopped using it my skin stabilized... very bummed!
Report this reviewGreat everyday serum
I received a sample of this serum when I purchased some moisturizer and I fell in love the moment I put it on. I purchased a bottle of it and now use it everyday. It not only makes my skin feel hydrated and silky, but it also gives a fresh looking glow to my skin which makes my makeup look beautiful. I highly recommend this product. My skin looks almost flawless for my age with the Medik8 products that I purchased. Also, I find it to be a good value.
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