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Crystal Retinal 1

Medik8 Crystal Retinal 1 30ml

%0 4.7 | 3345 reviews
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£45.00 (£1.50 per ml)

Free UK delivery

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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.

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.

+Offer

FREE Press & Clear 150ml when you spend £100 on Medik8.*

Reveal visibly clearer skin in just 7 days - without irritation* with Medik8’s Press & Clear. 

 

*One free gift per order. Valid until the 10th of May or whilst stock lasts. Your free gift will automatically add to the shopping bag page. Total at order summary must be £100 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

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Rated 5 out of 5 by from Best retinol [This review was collected as part of a promotion.] One of the best retinol I have ever tried And every time come back I have got sensitive skin and so far on level 1 and is the best The right consistency, soak easy The right pink colour of the lotion Worth spending
Date published: 2026-04-22
Rated 5 out of 5 by from CrystalRetinol [This review was collected as part of a promotion.] Really impressed with the smooth consistency making it a pleasure to go on. Too early to see how it works, but so far a pleasure to use.
Date published: 2026-04-21
Rated 1 out of 5 by from Issue with pump [This review was collected as part of a promotion.] The issue isn’t with the retinal but more the tube it is it. The pump doesn’t work and I cannot get the retinal out. Are you able to help with this issue?
Date published: 2026-04-21
Rated 4 out of 5 by from great for tone and texture. [This review was collected as part of a promotion.] I've definitely noticed a difference in the texture and tone of my skin since using this. Not so much with fine lines but I've only just started using strength 10.
Date published: 2026-04-21
Rated 5 out of 5 by from Crystal Retinal [This review was collected as part of a promotion.] I have been titrating up the dose and my skin has tolerated it very well. With consistent use my skin is more supple and firm
Date published: 2026-04-20
Rated 5 out of 5 by from Not my first purchase [This review was collected as part of a promotion.] This is not my first purchase, and I’ve been using this product for quite a long time. I’m very satisfied with the results. My skin looks smoother, more even, and overall healthier. It’s become a staple in my routine, and I continue to repurchase it with confidence.
Date published: 2026-04-19
Rated 5 out of 5 by from Great product [This review was collected as part of a promotion.] Very happy with my purchase , wrinkles less visible just after 2 weeks of use
Date published: 2026-04-19
Rated 5 out of 5 by from Best product Excellent product - no sensitivity and I can see the difference it has made to my skin! 10/10
Date published: 2026-04-19
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