Vitamin C Skincare Products

Central to our CSA philosophy, vitamin C is key to radiant, age-defying, and protected skin. Our range of vitamin C skincare delivers brightening and antioxidant benefits. With stabilised types of vitamin C like tetrahexyldecyl ascorbate, these expertly-crafted formulas offer visible results with minimal irritation. We have a format for everyone; from potent vitamin C serums to nourishing moisturisers.


9 Products
Medik8 C-Tetra Advanced bottle displayed on a clean white background with translucent serum droplets, highlighting its lightweight gel-serum texture.-1

C-Tetra® Advanced

20% Vitamin C Gel-Serum With Phyto Exosomes

30ml / £69

C-Tetra®

C-Tetra®

Lipid vitamin C serum - Visibly brightens skin tone and minimises the signs of ageing

30ml / £42

C-Tetra® Luxe

C-Tetra® Luxe

Enhanced vitamin C radiance serum - Visible anti-ageing and brightening results

30ml / £59

Super C Ferulic™-4

Super C Ferulic™

Potent 30% Vitamin C Brightening Serum

30ml / £69

Daily Radiance Vitamin C™

Daily Radiance Vitamin C™

Vitamin C and SPF 30 2-in-1 moisturiser - Brightens complexion and protects against sun damage

50ml / £60

Copper PCA Peptides™-6

Copper PCA Peptides™

Mineral Antioxidant Peptide Serum

30ml / £65

C-Tetra® Cream

C-Tetra® Cream

Lipid vitamin C cream - Hydrates and restores radiance, with powerful antioxidant protection

50ml / £50

C-Tetra® Eye-8

C-Tetra® Eye

Lipid Vitamin C Radiance Serum

7ml / £24

r-Retinoate® Day & Night-9

r-Retinoate® Day & Night

Youth Activating Cream

50ml / £149

Frequently Asked Questions

What does vitamin C do in skincare?

Vitamin C is a powerful antioxidant that helps to brighten skin tone, even out pigmentation and boost collagen production. It also defends against environmental damage, such as pollution and UV exposure, for visibly smoother, more radiant skin.

For daily use, we recommend our  Daily Radiance Vitamin C moisturiser, which combines vitamin C with SPF 30, making it a simple and effective morning step alongside your evening vitamin A routine.

How to use vitamin C in skincare?

Apply vitamin C in the morning after cleansing and before moisturiser or sunscreen in your skincare routine. It works best on clean, dry skin and should be used consistently for visible results. Pairing it with daily SPF helps protect against environmental damage and supports a brighter, more even complexion.

Medik8’s C-Tetra Cream is the perfect starting point for anyone new to vitamin C. It helps restore radiance while defending against the visible signs of ageing caused by environmental stressors.

How long does it take to see results from vitamin C?

With consistent daily use, you may begin to notice a brighter, more even skin tone within 2 to 4 weeks. Improvements in overall radiance, texture and clarity become more visible over time, especially with continued use. Long-term benefits, such as reduced appearance of pigmentation and fine lines, typically develop over 8 to 12 weeks.

Is vitamin C suitable for all skin types?

Yes, vitamin C can be used by all skin types, including sensitive skin. The key is choosing the right strength and format for your skin’s needs. Stabilised forms of vitamin C, like tetrahexyldecyl ascorbate found in Medik8’s C-Tetra range, offer powerful brightening benefits in a gentle, non-irritating formula, ideal for daily use, even on delicate or reactive skin.

Does vitamin C help with blemish-prone skin?

Vitamin C can support blemish and acne-prone skin by calming inflammation, fading post-blemish marks and strengthening the skin barrier. Its antioxidant properties also help to reduce oxidative stress, which can contribute to breakouts.

A gentle vitamin C serum, like C-Tetra Advanced, is ideal for breakouts, delivering glow-boosting benefits without clogging pores.

Can you use vitamin C with retinol?

Yes, vitamin C and retinol can be used together as long as your skin tolerates them well. They target different skin concerns and work at different times of day: vitamin C in the morning to protect, and retinol at night to renew. Layering them at the right time can deliver powerful, complementary results.