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Crystal Retinal 1

Medik8 Crystal Retinal 1 30ml

%0 4.71 | 3733 reviews
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£45.00 (£1.50 per ml)

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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

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.

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Rated 5 out of 5 by from Compliments at 50? [This review was collected as part of a promotion.] I purchased a number of Medik8 products including Crystal Retinol 6 and i have more compliments about my skin since starting the products than i have had for many years prior to this - I am a convert
Date published: 2026-09-09
Rated 5 out of 5 by from Crystal retinal 3 [This review was collected as part of a promotion.] I have very reactive skin so decided to begin with strength 3 . I've had no reaction at all and have now progressed to strength 6 . . my skin loves this and it will be a permanent staple in my evening skincare routine.
Date published: 2026-09-08
Rated 5 out of 5 by from My Retinal Favourite for Years [This review was collected as part of a promotion.] I’ve been using Medik8 Crystal Retinal for several years now, after it was originally recommended to me by my cosmetologist, and it has become one of my favourite skincare products. I really like how my skin looks and feels when I use it consistently. It helps keep my skin looking smooth, fresh and healthy, and over time I’ve noticed an improvement in the overall texture and appearance of my skin. I also love that it feels comfortable on my skin and is easy to incorporate into my evening routine. After using it for several years, it’s definitely a product I trust and continue to repurchase. I would happily recommend it to anyone looking to introduce retinal into their skincare routine.
Date published: 2026-09-08
Rated 5 out of 5 by from Great product Great product, love the feel and can see the results Now purchased the next step up
Date published: 2026-09-07
Rated 5 out of 5 by from I love this product! I love this product and the fact you can ladder it up as your skin gets used to the product is fantastic. Couldn't recommend it high enough. My skin looks healthier, happier and I am super confident. Recommend 10 out 10.
Date published: 2026-09-07
Rated 5 out of 5 by from Reti-wow! [This review was collected as part of a promotion.] I am only halfway through my first tube of Retinal 6 and I have already ordered the next step up. I have noticed such a difference in my fine lines and overall skin texture, I am using it paired with the C Tetra Plus and the Collagen Peptide night cream, I love all three but I won't be without the retinal now. I've had no irritation and use it each night. I used The Ordinary Retinal before, but have really noticed a massive difference in my skin and received loads of compliments on it, one being from an Elemis facialist!
Date published: 2026-09-07
Rated 5 out of 5 by from Gentle effective retinal [This review was collected as part of a promotion.] This retinal is gentle yet very effective. I have been gradually moving up the levels from 6 to 20 and seen good results each time.
Date published: 2026-09-07
Rated 5 out of 5 by from Really have seen a difference To be honest I wasn’t quite sure what to expect from this cream, I have dabbled with retinols before but found they irritated my skin and made them very dry. This has been a game changer, I followed the regime in terms of starting slowly and building my tolerance up and have had no irritation or dryness. My skin texture has really improved especially my pore viability my skin just looks fresher and brighter. I’m hoping that with continued use and going up the retinol steps there will be improvements with my fine lines…. Prevention is better than cure!! I follow this up with the medik8 night cream for a full luxury feel.
Date published: 2026-09-07
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