Vitamin C + Sunscreen by Day, Vitamin A by Night

Our ultimate mission is to help you achieve Beautiful Skin for Life.

CSA Philosophy

How? In 2009, we invented the CSA Philosophy. Incredibly simple and grounded in science - it just works. This CSA method is becoming more and more mainstream by the day and we couldn't be happier. Just use a vitamin C plus sunscreen by day, vitamin A by night. That's it.

If you look after your skin and follow our simple advice, we believe you can look 40 when you’re 50.

Vitamin C

Well formulated, stabilized vitamin C promotes visible radiance over the complexion and helps to smooth the appearance of visible fine lines and wrinkles, all whilst acting as an antioxidant .

Shop Vitamin C Products


It is estimated that 80% of skin aging is caused by the sun. Sadly, skin damage caused by the sun doesn’t only happen when it’s sunny. If it is light out, it means the sun’s rays can still reach you. Even on a cloudy day, you will still get approximately 50% of UV reaching your skin. Wearing high-strength sun protection every day is fundamental for a healthy-looking complexion. We are creating a range of incredible sunscreens for the US market. Stay tuned to our social channels for the latest launch information.

Vitamin A

As the Experts in Vitamin A (aka retinol), Medik8 has developed a wide range of night creams and serums to rejuvenate skin while you sleep. Vitamin A is quite simply the most important ingredient in any skincare enthusiasts routine. Skincare doesn’t need to be complicated - in fact, it shouldn’t be. Following our simple CSA philosophy will help improve the visible tone and texture of your skin; leaving it healthy and with a radiant glow.

To find out more about vitamin C and vitamin A, visit the Medik8 Blog for the latest articles and skincare advice. Or if you’re an ingredients boffin, why not take a look at our Ingredient Glossary for more in-depth knowledge.

Shop Vitamin A Products

More About Our Crusade

Beautiful Skin for Life

Beautiful Skin for Life

We're experts in anti-aging professional skincare.

Experts in Vitamin A

Experts in Vitamin A

Medik8 has a range of vitamin A products to suit every skin type and need...

The Founder

The Founder

Elliot Isaacs studied physiology at the University of Leeds alongside pharmacology and...

Precision Quality

Precision Quality

Medik8 is ISO 22716 and ISO 9001 certified by Lloyd's Registry Quality Assurance (LRQA) ...