New to skincare?

Discover a regime guide for your skincare goals


Not sure where to start with your skincare?

Discover the CSA Philosophy


The Power of Crystal Retinal®

11 Times Faster Than Retinol*

Discover youthful skin with our award-winning, groundbreaking retinaldehyde serum that reinvented vitamin A skincare.

Crystal Retinal is clinically proven to provide incredible age-defying results, up to 11x faster than standard retinol.*

5 Progressive Strengths

With strengths starting from 0.01% up to professional strength 0.2% retinaldehyde, Crystal Retinal has an option for every level of vitamin A user, allowing you to steadily power up your results.

Proven Results

Crystal Retinal delivers visible results similar to that of prescription-strength retinoic acid, while remaining gentle on the skin. Think visibly brighter, firmer and smoother-looking skin in just one tube.

Patented Stability System

Crystal Retinal is encapsulated in a patented crystal structure and housed in an innovative airless tube - for enhanced stability until the very last drop.

The World's 1st Clinical Strength Retinal For Under Eyes

New & Exclusive: the all-in-one, derm-loved under eye breakthrough - clinically proven to deliver powerful yet gentle age-defying results.

Medik8 Global Ambassador

Dr. Ewoma Ukeleghe

Medical & Cosmetics Doctor

For nearly a decade, I have wholeheartedly championed Medik8, a brand that skillfully combines medical-grade efficacy with cutting-edge skincare innovation.

Our Unique Retinal Ladder

Always peak, never plateau with our retinaldehyde ladder of progressive strengths, for ongoing visible results. Take our strength-finder quiz to find out which strength of Crystal Retinal and Crystal Retinal Ceramide Eye is right for you.


Award Winning Results

12 weeks using Crystal Retinal 6Zoom Out
Crystal Retinal®-

Crystal Retinal®

Award-winning Age-Defying Vitamin A Night Serum


As Seen In