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Reveal younger-looking skin with just 1 tube of Crystal Retinal.

Our iconic vitamin A night serum contains next-generation retinAL (not retinol) which is clinically proven to act 11x faster than retinol,* to visibly smooth, brighten and firm skin.

Unlike others, our internationally patented stability system ensures maximum retinal potency and effectiveness until the very last drop. All this without irritation, thanks to our industry-leading encapsulation technology which delivers gentle yet powerful results – even on sensitive skin.

Recommended by professionals and dermatologists worldwide, our unique ladder of 5 progressive strengths (0.01 – 0.2% retinaldehyde) means you can keep experiencing ever-improving benefits that tackle the most stubborn fine lines, wrinkles and dark spots. Crystal Retinal is THE age-defying night serum for every serious skincare routine.

*G. Siegenthaler et al., Retinol and retinal metabolism, Biochemical Journal, 1990, 268, pp 371-378

SKU N/A Category Product ID: 26462


This groundbreaking cream-serum uses a powerful retinaldehyde formula to dramatically improve the visible signs of ageing.

Medik8 Crystal Retinal 6 perfect for those who want to upgrade their high-strength retinol results.

Benefits of Medik8 Crystal Retinal 6:

  • Renews & resurfaces the skin
  • Visibly improves the appearance of fine lines & wrinkles
  • Works 11 x faster than other types of Retinol
  • Suitable for all skin types
  • Clears the bacteria responsible for blemishes & breakouts

This groundbreaking cream-serum is formulated with 0.06% Retinaldehyde, a super-charged derivative of vitamin A, which works to promote the skins natural collagen production, rebuild lost collagen and increase cell turnover, promoting a smoother, brighter and healthier complexion.

By requiring only one conversion to retinoic acid, the Crystal Retinal™ works 11 x faster than other forms of retinol, delivering results comparable to clinical-grade vitamin A. Trials have shown that in as little as four weeks, users have seen a vast improvement in the appearance of pigmentation, fine lines, wrinkles and breakouts and have an overall improved complexion. With the innovative crystal encapsulation system, the Retinaldehyde is slowly time-released, helping to reduce irritation, making this suitable for all skin types, including those who have previously been sensitive to Retinol.

With other key ingredients including Hyaluronic Acid and Vitamin E, the skin is hydrated at every level, leading to a plumper and smoother complexion and the skin barrier is strengthened, helping to lock in moisture. With a lightweight, silk-like texture that absorbs quickly into the skin, this powerful serum renews and resurfaces the skin, visibly minimises fine lines and wrinkles, reduces blemishes and pigmentation and delivers a healthier, brighter and more even-toned complexion.

Medik8 Crystal Retinal 6 key active ingredients:

  • Encapsulated Retinaldehyde –Proven to work up to 11 times faster than retinol, retinaldehyde is a revolutionary new form of vitamin A that targets fine lines and wrinkles, pigmentation and uneven skin texture.
  • Hyaluronic Acid –With a unique ability to attract and retain more than 1,000 times its own weight in water, hyaluronic acid draws moisture from the surrounding atmosphere into the skin, leaving the complexion feeling both nourished and supple.
  • Vitamin E –An oil-soluble antioxidant, vitamin E can quench free radicals on the skin while stabilising retinaldehyde for optimal power.
  • Glycerin –As a natural humectant, glycerin trapswater within the skin to leave it hydrated and comfortable.

How to use: 

To be introduced to the skin gradually. Use once every three nights for the first two weeks, increasing to every other night for the next two weeks.After this point if the skin is not showing any signs of dryness or sensitivity, increase usage to every night for best results.

On an evening, on dry skin, blend a small amount over the face and neck before following with your regular Medik8 hydrator.

Always use a sunscreen during the day in conjuncture with this product.

Not to be used if pregnant or breastfeeding.

Size: 30ml

Please Note: This product cannot be shipped outside of the UK and Ireland.

Fast Wrinkle Reducing Power

See clinically proven wrinkle reduction with just 1 tube*

*Proven via independent clinical study on Crystal Retinal 6. Tested on 33 participants over 12 weeks.

Professional-Grade Results

Retinaldehyde is proven to work up to 11 times faster than classic retinol* – so you can see results sooner

*G. Siegenthaler et al., Retinol and retinal metabolism, Biochemical Journal, 1990, 268, pp 371-378

Radiant, Youthful Skin

Delivers remarkable visible improvement in texture, brightness, firmness & clarity

Effective Results Until the Last Drop

Thanks to Medik8’s patented stability complex

Customize Your Routine With 5 Progressive Strengths

A retinal strength for beginners to expert users – even sensitive skin

Step 1

After cleansing in the evening, apply 2 pumps of Crystal Retinal to the face and neck. Allow to absorb then follow with a moisturiser. We recommend Advanced Night Restore which is specifically designed to be used after vitamin A.

Step 2

For new users of Crystal Retinal, phase application in gradually. Use twice a week for the first 2 weeks, every other night for the next 2 weeks, then every night. You should always use a sunscreen the next morning after using vitamin A.

Crystal Retinal 20 should only be used by those who have comfortably finished at least 2 tubes of Crystal Retinal 10, due to it containing a very high strength of retinal (0.2%).


Proven to work up to 11 times faster than standard retinol,* retinaldehyde (retinal for short) is a revolutionary form of vitamin A that effectively targets the appearance of fine lines and wrinkles, hyperpigmentation, uneven skin texture and loss of firmness – without irritation.

*G. Siegenthaler et al., Retinol and retinal metabolism, Biochemical Journal, 1990, 268, pp 371-378


Hyaluronic Acid

With the ability to attract and retain more than 1,000 times its own weight in water, hyaluronic acid draws moisture into the upper layers of the skin; leaving the complexion hydrated and visibly supple.


Vitamin E

A powerful antioxidant, vitamin E works to protect against the ageing effects of free radical damage while stabilising retinal for optimal power.



A natural humectant which traps moisture within the skin to leave it hydrated and comfortable.

When it comes to vitamin A; the more stable the molecule, the more effective it can be on the skin. Crystal Retinal offers a level of retinal stability that can only be found at Medik8.

Our innovative stability system features our renowned crystal encapsulation technology, a patented carrot seed oil complex, and airless packaging. All this comes together to protect the retinal molecule for unmatched potency, long-lasting effectiveness and proven skin comfort.

Unlike many retinals, which can cause flaking and irritation, Crystal Retinal has been expertly formulated in our in-house laboratory with a unique combination of the highest quality ingredients and patented technologies so it’s gentle yet very powerful.


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