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Crystal Retinal 6

MEDIK8 Crystal Retinal 6

%0 4.71 | 2833 reviews
Box

£69.00 (£2.30 per ml)

30ml (£2.30 per ml)
In stock

If you like we can let you know when we have some more.

Product Description

Reveal visibly firmer, brighter-looking skin with just 1 tube of Crystal Retinal.

Medik8’s bestselling vitamin A night serum is formulated with next-generation retinaldehyde (retinal) which is clinically proven to act 11x faster than retinol* for a visibly brighter, smoother and firmer-looking complexion.

Unlike other retinal serums available, Crystal Retinal features Medik8’s unique patented stability system to ensure maximum retinal potency, while their industry-leading encapsulation technology delivers powerful yet gentle results with minimal irritation, even on sensitive skin types.

Loved and recommended by dermatologists and professionals all over the world, Crystal Retinal features a unique ladder of 5 progressive strengths (0.01%-0.2% retinal) so that you can continue to experience increased visible youth-renewing results. If you’re a vitamin A beginner, Medik8 recommends that most people start on Crystal Retinal 3 (0.03%), or Crystal Retinal 1 if you have very sensitive skin (0.01%). If you’re an experienced vitamin A user, start with Crystal Retinal 6 (0.06%) and gradually work your way up to Crystal Retinal 20 (0.2%). To use Crystal Retinal 20, you must have comfortably finished at least 2 tubes of Crystal Retinal 10 due to it containing a high percentage of retinal.

Working to reduce the appearance of stubborn fine lines and wrinkles and dark spots, Crystal Retinal is the ultimate age-defying serum for a healthier, more youthful-looking complexion.
*G. Siegenthaler et al., Retinol and retinal metabolism, Biochemical Journal, 1990, 268, pp 371-378

Key Benefits:
Fast Wrinkle Reducing Power
Clinically proven to visibly reduce wrinkles & dark spots by 20% 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
97% felt their skin had a more youthful appearance*
*Proven via independent clinical study on 1 tube of Crystal Retinal 6. Tested on 33 participants over 12 weeks.

Effective Results Until the Last Drop
Thanks to Medik8's patented stability complex

Customise Your Routine With 5 Progressive Strengths
A retinal strength for beginners to expert users - even on sensitive skin

Proven Results:
97% felt their skin had a more youthful appearance*
20% reduction in the appearance of wrinkles*
20% reduction in visible hyperpigmentation*
11% increase in skin firmness*
100% felt Crystal Retinal was gentle on their skin*
*Proven via independent clinical study on 1 tube of Crystal Retinal 6. Tested on 33 participants over 12 weeks.

Key Ingredients:
Retinaldehyde
Retinaldehyde (retinal for short) is a revolutionary form of vitamin A that is clinically proven to work 11x faster than traditional retinol* to address the appearance of fine lines and wrinkles, uneven skin texture, loss of firmness and hyperpigmentation without any irritation.
*G. Siegenthaler et al., Retinol and retinal metabolism, Biochemical Journal, 1990, 268, pp 371-378

Hyaluronic Acid
An incredibly hydrating ingredient, hyaluronic acid attracts and retains more than 1,000 times its own weight in water and draws moisture in the upper layers of the skin; leaving it looking visibly supple and deeply hydrated.

Vitamin E
Rich in antioxidants, vitamin E helps to protect the skin against ageing free radicals, while helping to stabilise retinal for maximum results.

Glycerin
A natural humectant that locks moisture into the skin; leaving it feeling comfortable and hydrated.

Good to Know:
CLINICALLY-PROVEN FORMULA
DERMATOLOGIST RECOMMENDED
NO ARTIFICIAL FRAGRANCE
NO SYNTHETIC COLOURS
PARABEN FREE
ALCOHOL FREE

Directions

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.

How to Layer Crystal Retinal
PM: In your evening routine, first cleanse and apply your target serum. Follow with Crystal Retinal and finally, your moisturiser.

Ingredients

Simmondsia Chinensis (Jojoba) Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Citrus Grandis (Grapefruit) Peel Oil, Tocopheryl Acetate, PPG-12/SMDI Copolymer, Limonene, Citral, Linalool, Geraniol.

This list of ingredients may be subject to change, please consult the packaging of the product purchased.

See more...

Rated 5 out of 5 by from I have sensitive rosacea prone I have sensitive rosacea prone skin but this has not caused any irritation. It has a lovely delicate fragrance, is easily absorbed, and helps makes my skin feel soft. I think that it has helped to plump the skin and blur lines. I definitely think that this product has improved my skin.
Date published: 2025-09-07
Rated 4 out of 5 by from Retinal 20 Review I think it works based on the compliments that I get. I follow the instructions to introduce it slowly and my skin still purged. I would recommend it.
Date published: 2025-09-07
Rated 5 out of 5 by from Incredible My first time using Medik8 and it did not disappoint. My skin has never been smoother or clearer. I’m obsessed 🤩
Date published: 2025-09-07
Rated 5 out of 5 by from The amazing difference using Cristal Retinal Cristal Retinal was suggested by my Dermatologist and it’s amazing the difference for the night .
Date published: 2025-09-06
Rated 5 out of 5 by from Crystal Retinal My complexion looks smoother, brighter, and I've noticed fine lines appear to be reduced. I love this! Feels great on my skin too.
Date published: 2025-09-06
Rated 5 out of 5 by from Crystal retinol Lovely creamy consistency. Skin feels lovely & hydrated in the morning.
Date published: 2025-09-06
Rated 2 out of 5 by from Put this on every night Put this on every night and it did nothing at all for my wrinkles, my skin feels very soft but not the results I was hoping for at such a cost.
Date published: 2025-09-06
Rated 5 out of 5 by from My 3rd tube already Pricey, but a little goes a long way. My 3rd tube already
Date published: 2025-09-06
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I am on retinal 3 at the moment can I move up to 6 now 

Asked by: Thera
If you have used retinal 3 for a while and your skin is okay with it, then yes I would say you can try 6. 
Answered by: Rachel
Date published: 2024-09-04

Can I use this serum under eyes?

Asked by: Anonymous
I think it might be too potent for under eye 
Answered by: Anonymous
Date published: 2024-07-19
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