BurgerClosechevronBagSearchUser
  • Delivery country: United Kingdom
  • servicesStores & services
    Belfast, Victoria Square
    Stores
    Sephora Belfast, Victoria Square
    Victoria Square, Bridge St, Belfast, BT1 4QG
    View All Hours +
    Cycle
    Change your store

    Your favourite store allows you to see services available and book appointments

    In-Store Services
    Make-up and skincare services, Benefit BrowBar, gifting and personalisation workshop, Sephora offers you a whole range of services to come and discover in store Make an appointment
    (Belfast, Victoria Square)
    See Belfast, Victoria Square store servicesView all stores
  • Wishlist
  • Cart0
Crystal Retinal 1

Medik8 Crystal Retinal 1 30ml

%0 4.71 | 3575 reviews
Box

£45.00 (£1.50 per ml)

Free UK delivery

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 Total Moisture Daily Facial Cream 12.5ml, when you spend £70 on Medik8.*

Experience deeply hydrated and instantly plumped skin with Medik8’s multi-action, fragrance-free daily moisturiser.

*One free gift per order. Valid until the 3rd August or whilst stock lasts. Your free gift will automatically add to the shopping bag page. Total at order summary must be £70 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.

 

Shop this offer

See more...

Rated 5 out of 5 by from Love it [This review was collected as part of a promotion.] Gives my skin a nice smooth feeling- I don’t have wrinkles so not sure how it works but I’ve been using this product for two years and I think this is the reason that I don’t have wrinkles It didn’t cause any irritation or discomfort
Date published: 2026-07-25
Rated 4 out of 5 by from Crystal retinal 1 [This review was collected as part of a promotion.] Started off with crystal retinal 1 as have sensitive skin but have had no issues so far. Stuck to recommended routine and now applying each night. No dryness or redness or irritation. Not seeing massive results yet but still early days and think I should maybe have started with crystal retinal 3. Will get that next
Date published: 2026-07-24
Rated 5 out of 5 by from The best retinal on the market [This review was collected as part of a promotion.] I've used the Medik8 crystal retinal for years and have slowly progressed through the levels and honestly it's amazing! I don't know how they've done it but the fact that I can use this almost every day without getting dry and flakey and still see such wonderful results it's miraculous. I really feel like Medik8 puts time and effort into creating their products rather than just launching a new product every other day. This isn't fast skincare, it's skincare designed to stand the test of time!
Date published: 2026-07-24
Rated 5 out of 5 by from Amazing product [This review was collected as part of a promotion.] Love love love this product. Just moved onto strength 10 highly recommend
Date published: 2026-07-23
Rated 5 out of 5 by from Serious results [This review was collected as part of a promotion.] The Crystal Retinal facial serum has been my best skincare find. I’d only used retinol once before this (from a premium well-known brand), which left my skin peeling for weeks. Crystal Retinal, however, has not irritated my skin at all. The best bit is that this serum gives serious results – my lines are so much less visible and my skin tone is the best it’s been in years. I started on 3 and stuck with it for several tubes. I then moved to 6, which my skin tolerates well and I continue to see results. At 53, my friends are asking what I’ve been using on my face, and I recommend this.
Date published: 2026-07-23
Rated 5 out of 5 by from Good for my rosacea [This review was collected as part of a promotion.] I can’t really see a change as yet but I’ve only been using for a few weeks. However as I have rosacea I am really pleased that it hasn’t caused a flare up so I will continue with it and hopefully progress to a stronger version next
Date published: 2026-07-22
Rated 5 out of 5 by from Excellent product [This review was collected as part of a promotion.] I’ve used the whole range from 3 - 10. It’s a lightweight product which feels gentle on my skin
Date published: 2026-07-22
Rated 3 out of 5 by from Waiting to see … Have been using crystal retinal 6 recommended by a friend to reduce eye bags and have seen some improvement but first thing in the morning eyes still puffy. Hoping using it for longer will improve the skin around my eyes. Skin concern is bags/fluid around the eyes but nearest option dark circles
Date published: 2026-07-20
  • y_2026, m_7, d_28, h_9
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.48
  • cp_1, bvpage1
  • co_hasreviews, tv_7, tr_3561
  • loc_en_GB, sid_143617, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_sephora-uk
  • bvseo_sdk, p_sdk, 3.2.0
  • CLOUD, getReviews, 134.61ms
  • REVIEWS, PRODUCT