Vitamin A

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Retinal is the most powerful form of vitamin A available, as it is just one conversion step away from retinoic acid. It acts 11x faster than traditional retinol*, helping to deliver brighter, firmer, smoother-looking skin. Our retinal skincare range, including our award-winning retinaldehyde serum, offers clinically proven solutions in strengths varying from 0.01% to 0.24% with proven tolerability. Discover our range of retinal products, from eye creams to serums, designed to deliver visible youth-renewing results for even, radiant skin.


*G. Siegenthaler et al., Retinol and retinal metabolism, Biochemical Journal, 1990, 268, pp 371-378
Crystal Retinal®
A woman smiling while applying crystal retinal to her cheek and a silver tube of Medik8 Crystal Retinal 6. Five bullet points with checkmarks list product benefits: Clinically proven wrinkle reduction in 7 days, Clinically proven to visibly firm, smooth, brighten & lift skin in 1 tube, Clinically proven to reduce visible dark spots by 20%, 94% agreed Crystal Retinal promoted visibly clearer skin, and 100% agreed Crystal Retinal was gentle on their skin.
Evening
Fine Lines and Wrinkles
Crystal Retinal® Award-winning Age-Defying Vitamin A Night Serum
Full Size (30ML) | $91
Crystal Retinal® Ceramide Eye
Crystal Retinal® Ceramide Eye
Evening
Fine lines & wrinkles
Crystal Retinal® Ceramide Eye Smooth & Lift Eye Cream Gentle-Release Vitamin A
Crystal Retinal Ceramide Eye 3 (15ml) | $85
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A shot of the Intelligent Retinol Smoothing Night Cream jar, open and showing the cream, on a white background.
Close-up of the Medik8 Intelligent Retinol Smoothing Night Cream, showing the cream's texture inside the jar. The text TWO-IN-ONE RETINOL NIGHT CREAM is at the top, and a list of benefits with checkmarks is on the left: "Visibly smooths & refines uneven skin texture", "Helps to combat the ageing effects of free radicals", "Nourishes & softens the skin", and "Perfect for retinol beginners or a concise PM regime".
Fine lines & wrinkles
Intelligent Retinol® Smoothing Night Cream Renew & Nourish Gentle 0.2% Vitamin A
Full Size | $115
A bottle of Medik8 Intelligent Retinol Eye TR serum with a black cap on a plain background.
Intelligent Retinol Eye TR bottle stands on white geometric blocks. Text highlights that it minimizes fine lines, smoothes texture, supports a youthful eye area, and hydrates the skin.
Fine lines & wrinkles
Intelligent Retinol Eye TR™ Supercharged Eye Vitamin A Serum
$53
Medik8 Intelligent Retinol 3TR serum bottle stands against a clean white background with three clear liquid droplets. Text identifies the product as a 15mL Supercharged 0.3% Vitamin A Serum.
Medik8 Intelligent Retinol 6TR serum bottle stands against a clean white background with three clear liquid droplets. Text identifies the product as a 15mL Supercharged 0.6% Vitamin A Serum.
Evening
Fine lines & wrinkles
Intelligent Retinol™ Supercharged Vitamin A Serum
(15ml) | $89
Discover the No.1 Retinal Serum Worldwide

Discover the No.1 Retinal Serum Worldwide

CRYSTAL RETINAL®

SHOP THE AWARD-WINNING, AGE-DEFYING VITAMIN A NIGHT SERUM

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Medik8 Retinol 3TR serum bottle displayed against a clean white background with translucent serum droplets. The amber glass bottle with a black dropper cap features the Medik8 logo and is labeled RETINOL 3TR Advanced 0.3% Vitamin A Serum in a 15mL size.
"Medik8 Retinol 3TR serum bottle stands on a white stone block against a clean white background with soft light rays. The image features three check-marked claims: Visibly softens fine lines & wrinkles Brightens the look of the complexion Promotes visibly rejuvenated skin"
Evening
Fine lines & wrinkles
Retinol 3TR™ Advanced 0.3% Vitamin A Serum
(15ml) | $79

Frequently Asked Questions

Which Crystal Retinal strength should I start with?
If you're new to vitamin A or have sensitive skin, it's best to start with Crystal Retinal 1 or 3. These lower strengths are ideal for building tolerance while still delivering visible results. Once your skin adjusts, typically after one tube, you can step up gradually to higher strengths like Crystal Retinal 6 or 10 for enhanced benefits. For experienced vitamin A users or those with resilient skin, starting at Crystal Retinal 6 may be appropriate. Always introduce new strengths gradually, using them a few times a week at first, and follow with moisturiser and SPF. The tiered system is designed to support long-term, progressive results with minimal irritation.

Can I combine Crystal Retinal with other actives?

Yes, Crystal Retinal can be combined with other actives, but it’s important to do so thoughtfully to avoid overwhelming the skin. Medik8’s formulas are designed with compatibility in mind, so products like Press & Clear or Sleep Glycolic can be safely used in the same routine.

On nights you use Crystal Retinal, follow with a moisturiser that contains hydrating and barrier-supportive ingredients to help keep the skin calm and balanced. And as with all vitamin A products, be sure to apply a broad-spectrum SPF every morning.

How long does Crystal Retinal take to work?

Crystal Retinal is clinically proven to deliver visible improvement on wrinkles as well as skin smoothness and brightness in as little as 7 days.*

*Proven via independent clinical study on the Crystal Retinal ladder tested on 30 participants over 24 weeks.

When can I move up the ladder from my current Crystal Retinal strength?

We recommend using at least 1 tube of your current Crystal Retinal strength before moving up the ladder to the next strength.

Can I use Crystal Retinal around my eye area?

We don't recommend using Crystal Retinal directly around the eye area due to its very delicate nature. However, that's exactly why we've created Crystal Retinal Ceramide Eye. It boasts all of the renowned age-defying power of our original Crystal Retinal, but is expertly optimised for specific use on the delicate eye area.

Vitamin A

The gold standard in skin renewal

Vitamin A is the fundamental final step of our CSA philosophy®. As the unequivocal gold standard in skincare, it’s proven to improve visible signs of ageing, from fine lines to loss of firmness. By encouraging consistent cell renewal, it supports a smoother, healthier-looking complexion over time.

A tailored approach for every routine

We understand that no two skins are the same. Our range is uniquely tailored to offer a progressive journey through three distinct forms of vitamin A for every experience level:

  • Retinol - the classic form and perfect for those who prefer a traditional, oil-based serum.
  • Retinal - our “everyone” vitamin A that ensures a slow release, remaining gentle enough for even sensitive skin.

Leaders in vitamin A science

Backed by over a decade of research, expertise in vitamin A innovation, and meticulous testing, our high-performance retinoid solutions deliver transformative results without compromising on skin comfort.