Medik8 C-Tetra Travel Size 8ml bottle shown with its box

Medik8 C-Tetra Travel Size clinical results

Medik8 C-Tetra Travel Size alongside the wider Medik8 range

How to layer Medik8 C-Tetra Travel Size in your routine

Medik8 vitamin C range comparison including Medik8 C-Tetra Travel Size

Medik8 C-Tetra Travel Size and the Medik8 CSA Philosophy

Medik8 C-Tetra Travel Size

Name: Medik8 C-Tetra Travel Size
Brand: Medik8
Price: 15.00 GBP
Availability: InStock

30ml8ml Travel Size

£15.00

Tax included.

✓ 7% Stabilised Vitamin C | ✓ Restored Radiance in 7 Days | ✓ 8ml Travel Size

Medik8 C-Tetra Travel Size is Medik8's cult original vitamin C serum in an 8ml dropper bottle, previously sold as the Try Me size: a lightweight 7% stabilised vitamin C oil in the same formula as the full 30ml. It is the vitamin C serum for beginners and sensitive skin, sized for travel or a first trial.

The vitamin C in Medik8 C-Tetra Travel Size is tetrahexyldecyl ascorbate, a stable, lipid-soluble and low-irritation form that gives antioxidant protection against free radicals while visibly brightening and supporting collagen. Vitamin E adds a second layer of antioxidant defence, and a light jojoba oil base leaves skin soft rather than greasy. In Medik8's consumer study on sensitive skin, radiance was restored in 7 days and 96% agreed it was gentle.*

Visible Results Users Love

Restored radiance in 7 days*
Visibly reduced wrinkles and dark spots at 4 weeks*
90% felt instantly softer skin*
96% of sensitive skins agreed it was gentle*
*Independent consumer study on C-Tetra, 52 participants with sensitive skin over 4 weeks

Why This Beats a Standard Vitamin C Serum

Pure L-ascorbic acid can oxidise and sting. Medik8 C-Tetra Travel Size uses a stabilised vitamin C that stays gentle, and the small bottle means you finish it while it is fresh – ideal if you are not yet sure how your skin will react to vitamin C.

Best For

Dull or uneven-looking skin, vitamin C beginners, sensitive complexions, and anyone who wants their morning antioxidant in hand luggage. For a gentle first vitamin C that travels, Medik8 C-Tetra Travel Size is the one to pack.

As a registered aesthetic nurse with over 20 years in specialist skincare, Becci has guided countless clients through their first vitamin C. C-Tetra is where she usually suggests starting, and this travel size is the simplest way to see how your skin responds.

Size: 8ml

FAQS

Is Medik8 C-Tetra Travel Size the same as the Try Me size? +

Yes. Medik8 now calls its minis 'Travel Size'; older cartons and some stockists still say 'Try Me'. It is the same formula as the 30ml C-Tetra in an 8ml bottle.

Is Medik8 C-Tetra a good vitamin C serum for sensitive skin? +

It was tested on a panel of sensitive skins, and 96% agreed it was gentle. It uses a stabilised, low-irritation vitamin C. Patch test first, as it contains natural essential oils.

What is the difference between C-Tetra, C-Tetra Luxe and C-Tetra Advanced? +

C-Tetra is the original 7% vitamin C serum and the gentle starting point. C-Tetra Luxe is a richer 14% serum, and C-Tetra Advanced is Medik8's most advanced vitamin C serum.

Can I use Medik8 C-Tetra with retinol or Crystal Retinal? +

Yes. Use C-Tetra in the morning and your vitamin A in the evening, as part of Medik8's CSA Philosophy.

Can I use C-Tetra at night instead? +

Medik8 recommends the morning, when vitamin C gives antioxidant protection through the day. Always follow with sunscreen.

How long does the 8ml C-Tetra Travel Size last? +

At 4–5 drops each morning, roughly six weeks – long enough to see the difference before buying the 30ml.

How quickly will I see results from C-Tetra? +

Medik8's study recorded restored radiance in 7 days and visibly reduced wrinkles and dark spots at 4 weeks.

Can I take Medik8 C-Tetra Travel Size in hand luggage? +

Yes. At 8ml it is well under the 100ml liquids limit for cabin bags.

Can I use Medik8 C-Tetra Travel Size during pregnancy or breastfeeding? +

Medik8 states that, as a cosmetics company, it cannot give medical advice, but that this product does not contain any ingredients it would recommend avoiding during pregnancy unless advised by your doctor. Please discuss the full ingredient list with your GP or midwife before use.