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Crystal Retinal 1

Medik8 Crystal Retinal 1 30ml

%0 4.71 | 3447 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.

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.

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 Amazing [This review was collected as part of a promotion.] Have been using this for 18 months, every night, no irritation and my skin looks and feels really nice. Highly recommend this if you have struggled with other Vit A products.
Date published: 2026-05-31
Rated 5 out of 5 by from Be consistent [This review was collected as part of a promotion.] Really love this product. Feel like I have noticed a definite difference in the texture of my skin since using. Need to use consistently with a good moisturiser.
Date published: 2026-05-31
Rated 5 out of 5 by from Great I have really sensitive skin and have never been able to use retinol before without getting dry, flaky skin . I started with number 1 (used half) and it’s not irritated my skin , I can see my skin looks brighter already
Date published: 2026-05-30
Rated 5 out of 5 by from Amazing Difference within a month of use!! [This review was collected as part of a promotion.] I have been using retinols for a while, so I decided to go for the stronger product. This was super easy to do, my skin did not react to the new strength, instead I noticed my skin looking brighter, less blemishes, tighter & faded fine lines. I have been asked if I have had work done, due to the quick change in my skin. Super super impressed!
Date published: 2026-05-30
Rated 5 out of 5 by from All the strength no irritation [This review was collected as part of a promotion.] I've been going up the retinal ladder, having started at 6 and currently being on 20. Not one strength has caused me any issues in terms of reactions. The stronger ones do tend to leave a bit of a yellow residue on my pillow but this has washed out. Might make sense to have a dedicated retinal pillow cover though!
Date published: 2026-05-30
Rated 4 out of 5 by from Will be a regular addition to skincare! [This review was collected as part of a promotion.] I think it's too early to see a massive difference but, I do think my skin looks clearer and more evenly toned. I was using the ordinary retinol before and much prefer the texture of this one and how it feels on my skin. Absorbs quickly and haven't experienced any negative effects. I will buy this again, it is a staple in my routine now an
Date published: 2026-05-30
Rated 5 out of 5 by from This is so lovely. Texture [This review was collected as part of a promotion.] This is so lovely. Texture is so luxurious. Skin looks so much smoother and appearance of fine lines looked diminished. Quality product that is a staple in my skincare
Date published: 2026-05-30
Rated 5 out of 5 by from Un paralleled skincare [This review was collected as part of a promotion.] My whole skincare regimen is Medik8 and the results are unparalleled. I have not been disappointed by a single product. All have exceeded my expectations. I'd like to see a neck serum/cream in your range. Thank you Medik8.
Date published: 2026-05-29
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