BurgerClosechevronBagSearchUser
  • Delivery country: United States
  • 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 3

Medik8 Crystal Retinal 3 30ml

%0 4.71 | 3574 reviews
Box

£50.00 (£1.67 per ml)

In stock

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.

More information

*Product packaging may vary by region\n

Ingredients

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

See more...

Rated 2 out of 5 by from Is not better than adapalene [This review was collected as part of a promotion.] This product didn’t do my skin any good; in fact, I think it undid the progress I’d made with adapalene. I realise it’s more geared towards anti-ageing rather than helping with acne or blocked pores. Again, so as not to throw it away, I’m using it only on my neck and hands.
Date published: 2026-06-08
Rated 5 out of 5 by from Perfect [This review was collected as part of a promotion.] Feel lovely on skin, can see improvement in skin within a couple of weeks
Date published: 2026-06-08
Rated 5 out of 5 by from Crystal retinal [This review was collected as part of a promotion.] Best you can buy! Tried many retinol products over the years but they just did not suit my skin. I then discovered medik 8 crystal retinal and have never looked back. I have been using it for sometime now and am using crystal retinal 24. Sublime results for aging skin, will continue using permanently.
Date published: 2026-06-08
Rated 5 out of 5 by from Great product dissapointing packaging [This review was collected as part of a promotion.] On crystal medik8 3. Although I really like the product and the feel on my skin I’m so disappointed in the packaging. It works one minute and not the next. I emailed medik8 and they sent me a helpful video but it keeps happening. For a mid range serum I expected better packaging. It may just be that I have a bottle that is defective. I want to continue using and going up the strengths as this serum is VERY gentle due to encapsulation and works well for my skin type but really on the fence about ordering again.
Date published: 2026-06-08
Rated 5 out of 5 by from Already benefiting from Crystal Retinal 6 [This review was collected as part of a promotion.] I am quite new to Medik8, a 69 years young male and wanting to delay aging and 'falling apart' for as long as possible. I am very happy to have found Medik8 and am already benefiting from Crystal Retinal 6.
Date published: 2026-06-08
Rated 5 out of 5 by from Glides and absorbs like a dream [This review was collected as part of a promotion.] Spreads over the face so easily and absorbs so well, skin is definitely looking better after being consistent with this for the past month. No irritation and feel it absorbs so much better than other brands I’ve tried
Date published: 2026-06-08
Rated 5 out of 5 by from I’ve been using crystal retinol [This review was collected as part of a promotion.] I’ve been using crystal retinol 6 fora few years now and have really noticed how clear and even my skin tone looks.
Date published: 2026-06-07
Rated 5 out of 5 by from Everyone needs this [This review was collected as part of a promotion.] I’ve been using this for many years now and wouldn’t trade it. I’ve been able to get higher strength overseas but end up with flaky skin. So I always return to this.
Date published: 2026-06-07
  • y_2026, m_6, d_10, h_10
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.46
  • cp_1, bvpage1
  • co_hasreviews, tv_44, tr_3523
  • loc_en_GB, sid_143618, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_sephora-uk
  • bvseo_sdk, p_sdk, 3.2.0
  • CLOUD, getReviews, 28.93ms
  • REVIEWS, PRODUCT