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Crystal Retinal 1

Medik8 Crystal Retinal 1 30ml

%0 4.71 | 3802 reviews
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£45.00 (£1.50 per ml)

In stock

This product is temporarily out of stock

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

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

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.

HOW TO USE
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

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.

Test 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.

More information

*Product packaging may vary by region

Ingredients

Aqua (Water), Caprylic/Capric Triglyceride, Glycerin, Isododecane, Cetearyl Olivate, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Cetearyl Alcohol, PPG-12/SMDI Copolymer, Sorbitan Olivate, Tocopheryl Acetate, Phenoxyethanol, Titanium Dioxide, Squalane, Eclipta Prostrata Extract, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Disodium EDTA, Hydroxyacetophenone, Cyclodextrin, Ethylhexylglycerin, 3-O-Ethyl Ascorbic Acid, Dipteryx Odorata (Tonka) Bean Extract, Hydroxypropyl Methylcellulose, Sodium Hyaluronate, Tetrahexyldecyl Ascorbate, Coumarin, Melia Azadirachta Leaf Extract, Bht, Alumina, Isostearic Acid, Lecithin, Polyglyceryl-3 Polyricinoleate, Polyhydroxystearic Acid, Stearic Acid, Rubus Chamaemorus Seed Oil (Cloudberry), Polysorbate 60, Sorbitan Isostearate, Moringa Oleifera Seed Oil, Pentylene Glycol, Retinal, Vanilla Planifolia (Vanilla) Fruit Extract, Daucus Carota (Carrot) Sativa Seed Oil, Lonicera Japonica (Honeysuckle) Flower Extract, Lonicera Caprifolium (Honeysuckle) Flower Extract, Sodium Polyaspartate, Climbazole, Decylene Glycol, 1,2-Hexanediol

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

Free gift

FREE Advanced Night Restore 12.5ml, when you spend £85 on Medik8.*

*One free gift per order. Valid until 17th October or whilst stock lasts. Your free gift will automatically add to the shopping bag page. Total at order summary must be £85 or more worth of Medik8 products, after any Promotion Code, Brands You Love discount and before delivery charges are applied. Cannot be used in conjunction with any other Promotion and this offer is not applicable to previously made or pending purchases.

Excludes Gift Voucher, Sephora Favourites Advent Calendar and Fragrance Gift Box purchases. This offer is available online at Sephora.co.uk to UK Mainland customers only. Image used is for illustrational purposes only.

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Rated 4 out of 5 by from Retinal 10 [This review was collected as part of a promotion.] I really like the product but the pump isn’t working properly. It is getting stuck and the product isn’t coming out and when it finally does too much is being pumped. I feel I am wasting a lot of product and given the price it feels really wasteful.
Date published: 2026-10-14
Rated 5 out of 5 by from Miss hatice I’m really impressed with the Medik8 Crystal Retinal! My skin looks smoother, brighter and healthier, and I’ve noticed a real improvement in its overall appearance. It feels like such a high-quality product, and I’m so happy with the results. Definitely worth the investment! ✨ Highly recommend!
Date published: 2026-10-14
Rated 5 out of 5 by from Crystal retinal [This review was collected as part of a promotion.] I’m pleased so far, I’ve been using it just under a month and I feel my lines are starting to soften, so that feels like a good result.
Date published: 2026-10-14
Rated 5 out of 5 by from My first retinal experience and I loved it [This review was collected as part of a promotion.] I have been using the product now for the last 8 months and it has improved the texture of my face and neck. I first started every other day in evenings and now I apply every evening and every other day in mornings. A pea-sized amount is enough plus the cream smells nice. I will soon move to retinal #6.
Date published: 2026-10-12
Rated 4 out of 5 by from Exceeded expectations [This review was collected as part of a promotion.] I was a bit reluctant to purchase this as the market is flooded with retinal products and I had not yet come across one that actually worked. This one is easy to add to your routine. I use it alongside the peptide serum and feel the combo works well for me. I can see some visible results after a month of use so fingers crossed it continues. Planning yo go for the next level strength next time.
Date published: 2026-10-12
Rated 3 out of 5 by from Good quality but ineffective applicator. I am liking this but it started to behave like it had run out after only a couple of weeks. It took me a while to move the contents within the tube to get it to pump out again.
Date published: 2026-10-11
Rated 5 out of 5 by from My absolute favourite products [This review was collected as part of a promotion.] Absolutely the best product I’ve ever bought for my face, would never stop buying this, the difference it makes to your skin is totally amazing.
Date published: 2026-10-11
Rated 4 out of 5 by from Well i dont really think [This review was collected as part of a promotion.] Well i dont really think it makes much difference, and I dont think any of these creams work. Maybe not on my ugly face
Date published: 2026-10-11
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