CSA: vitamin C and sunscreen by day, vitamin A by night

Medik8

Medik8 is British skincare built on a simple philosophy it calls CSA: vitamin C and sunscreen every morning, vitamin A every night. Its Crystal Retinal serums pioneered stabilised retinaldehyde for faster results with less irritation, and every formula is designed to be introduced gradually so skin gets stronger, not sensitised.

Flawless Body is an authorised UK stockist. Every product is genuine, sourced direct from Medik8, and dispatched from our Stamford warehouse.

Authorised Medik8 stockist
Sourced direct, guaranteed genuine
Free standard EU delivery from €100
€7 on orders below €100.
All things skin & hair since 2006
Based in Stamford, Lincolnshire

YOUR ROUTINE, MADE PERSONAL

Find your Medik8 routine

Answer a few questions about your skin, choose your budget and see your personalised product shortlist.

Flawless Body · Your routine

Loading your routine advisor…

Shop by range

Pick the step or concern you are shopping for, or use the finder further down if you are not sure.

Serums

Vitamin C, retinal and peptides

Serums

C-Tetra vitamin C by day, Crystal Retinal by night, Liquid Peptides and Hydr8 B5 in between: the heart of the Medik8 routine.

27 products Shop range
Moisturisers

Day and night

Moisturisers

Total Moisture Daily Facial Cream, Advanced Night Restore and Daily Radiance Vitamin C: hydration matched to the serum underneath.

17 products Shop range
Cleansers & Toners

Step one

Cleansers & Toners

Surface Radiance Cleanse, Clarifying Foam, Lipid-Balance Cleansing Oil and Daily Refresh Balancing Toner for every skin type.

13 products Shop range
Eyes & Lips

Delicate areas

Eyes & Lips

Crystal Retinal Ceramide Eye, Advanced Night Eye and Illuminating Eye Balm: retinal and peptide care for the eye area.

9 products Shop range
Direct Acids

Exfoliating tonics

Direct Acids

Press & Glow PHA tonic for daily use, Sleep Glycolic for overnight resurfacing and Press & Clear BHA for blemish-prone skin.

3 products Shop range
Sunscreen

The S in CSA

Sunscreen

Advanced Day Total Protect and Physical Sunscreen: high-factor daily protection with skincare benefits built in.

4 products Shop range

Not sure where to start?

Find your Medik8 step by what your skin needs.

Lines and loss of firmness

Crystal Retinal at night, stepped up gradually from 1 to 24. Shop Serums →

Dullness and pigmentation

C-Tetra vitamin C every morning brightens and protects. Shop Serums →

Dehydrated skin

Hydr8 B5 hyaluronic serum under any moisturiser. Shop Serums →

Blemishes and congestion

Press & Clear BHA tonic and Clarifying Foam cleanser. Shop Direct Acids →

Tired eyes and fine lines

Retinal and peptide eye care in the same gradual system. Shop Eyes & Lips →

Daily protection

High-factor sunscreen that completes CSA. Shop Sunscreen →

Still unsure? Every product page lists the skin type and concern it suits under Key Benefits.

Frequently asked questions

What makes Medik8 different from other skincare brands?

Created by scientists, this professional skincare line focuses on high-performance ingredients that deliver visible results while being gentle on the skin. The range is designed to tackle common concerns such as ageing, blemishes, and uneven tone.

Can Medik8 products be used on sensitive skin?

Yes, many formulas are suitable for sensitive or reactive skin. They're balanced with soothing ingredients like niacinamide and hyaluronic acid to minimise irritation and maintain hydration.

How long does it take to see results?

Results depend on your skin type and routine, but most people notice smoother, clearer skin within four weeks. Continued use improves tone, brightness, and overall texture.

What is the best way to include these products in my routine?

Start with a gentle cleanser, then apply serums or treatments before moisturiser and SPF. Introduce active ingredients like retinol slowly to allow your skin to adjust.

Is Medik8 cruelty free?

Yes, the company does not test on animals and is committed to ethical, sustainable, and vegan-friendly skincare practices.

You can read more about this in our blog post here.