Medik8

Medik8 C-Tetra 30ml

The gentle way into vitamin C, with none of the drama. A lightweight daily serum that restores visible radiance in seven days.

€54.00
Complete Your Routine
Glow Guide
  • Gentle enough for vitamin C beginners
  • Restores visible radiance in seven days
  • Softens the look of fine lines and wrinkles
  • Brightens uneven skin tone
  • Defends against environmental damage
Who's It For

All skin types, especially those new to vitamin C wanting a gentle, brightening daily antioxidant.
Description
GLOW GUIDE
  • Gentle, ideal for vitamin C beginners
  • Restores visible radiance in seven days
  • Softens fine lines and wrinkles
  • Brightens uneven skin tone
  • Defends against environmental damage
DESCRIPTION

Medik8 C-Tetra is a lightweight daily vitamin C serum that restores radiance and softens the early signs of ageing. Antioxidant vitamins C and E defend against sun and pollution damage while supporting collagen and elastin to soften fine lines and brighten uneven tone.

Formulated with lipid soluble tetrahexyldecyl ascorbate, it absorbs deeply for potent antioxidant protection with minimal irritation, and the water free formula keeps it stable and effective. A gentle, brightening starting point for anyone new to vitamin C.

Who's It For All skin types, especially those new to vitamin C wanting a gentle, brightening daily antioxidant. Now available at SkinShop.ie.

HOW TO USE

Each morning, smooth four to six drops over clean skin across the face, neck and décolleté. Follow with moisturiser and a broad spectrum SPF.

ABOUT THE BRAND

Medik8 is an award-winning global skincare brand built on the philosophy of Evidence. Ethics. Excellence. Every formula is developed by leading biochemists and dermatologists to target skin ageing, acne, redness, pigmentation and dryness. Trusted and recommended by doctors, dermatologists and skin therapists worldwide. Shop the full Medik8 range at SkinShop.ie, Ireland's home for clinical skincare.

INGREDIENTS

Vitamin C (Tetrahexyldecyl Ascorbate) — a gentle, lipid soluble form that brightens and defends.
Vitamin E — works with vitamin C to boost antioxidant protection.

Please Note: For an accurate listing of ingredients in each product, please refer to your product packaging prior to use. SkinShop also recommend all products are patch-tested 24 hours before application.
How to Use

Each morning, smooth four to six drops over clean skin across the face, neck and decollete. Follow with moisturiser and a broad spectrum SPF.

A gentle morning antioxidant under SPF; we layer it beneath Medik8 Advanced Day Ultimate Protect so brightening and sun defence work together.
Ingredients

Vitamin C (Tetrahexyldecyl Ascorbate): a gentle, lipid soluble form that brightens and defends.

Vitamin E: works with vitamin C to boost antioxidant protection.

Please Note: For an accurate listing of ingredients in each product, please refer to your product packaging prior to use. SkinShop also recommend all products are patch-tested 24 hours before application.
About the Brand

Medik8 is a British clinical skincare brand built around one simple philosophy: vitamin C and sunscreen by day, vitamin A by night. Backed by research and trusted by professionals worldwide, every formula is designed to deliver visible results while respecting the skin barrier.
View details
Glow Note

Not every active needs to announce itself. C-Tetra is the one you recommend to a nervous friend, the proof that gentle and effective are not opposites.

Customers Also Bought
Reasons to Shop at SkinShop

Authorised
Retailer

Irish Clinical
Skincare Experts

Complimentary
Samples

Free Delivery
in ROI over €75
See Real Reviews
See how our customers use it in their daily routines.
What Our Customers Are Saying

Customers praised this vitamin C serum as "the best" they've used. Most reported visible skin improvements within days, with one noting it's "not heavy on the skin" and suitable for sensitive, breakout-prone skin. One customer hasn't yet seen promised results but appreciates the immediate hydration and pleasant application.

  • 5 stars: 4 (80%)
  • 4 stars: 1 (20%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Anonymous
Lovely

Lovely serum

L
L.G.
It's the best vitamin c serum I have used

It's the best vitamin c serum I have used

C
C.
C-tetra

Not heavy on the skin. Saw improvement after a few days. Delighted with it. My skin is sensitive and prone to break outs

A
A.M.
Great product.

I can see a big difference in my skin since using this.

T
T.N.
Soft on skin

This feels really nice when applying. Especially if you need immediate hydration. I'm not sure yet if it is doing what it say it does. I've yet to see improvements.