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Crystal Retinal 6

MEDIK8 Crystal Retinal 6 30ml

%0 4.71 | 2952 reviews
Box

£69.00 (£2.30 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

Proven 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.

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.

Good to Know:
CLINICALLY-PROVEN FORMULA
DERMATOLOGIST RECOMMENDED
NO ARTIFICIAL FRAGRANCE
NO SYNTHETIC COLOURS
PARABEN FREE
ALCOHOL FREE

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.

Ingredients

Simmondsia Chinensis (Jojoba) Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Citrus Grandis (Grapefruit) Peel Oil, Tocopheryl Acetate, PPG-12/SMDI Copolymer, Limonene, Citral, Linalool, Geraniol.

This list of ingredients may be subject to change, please consult the packaging of the product purchased.

See more...

Rated 5 out of 5 by from Crystal retinol Excellent product. I have very very sensitive skin and haven't had any issues at all. Been using for 5 weeks now and haven't seen a significant difference in my problem skin. I will be buying again and would highly recommend
Date published: 2025-10-27
Rated 5 out of 5 by from Crystal retinal I’ve been using crystal retinal now for a few years and I can 100% say that I’ve noticed a difference in my skin I love the consistency not too heavy , I’ve gradually built my self up now and just ordered the 24 ,definitely recommend
Date published: 2025-10-27
Rated 5 out of 5 by from Crystal Retinal® Best product on the market, really recommend! Medik8
Date published: 2025-10-27
Rated 5 out of 5 by from My new go-to retinal I recently decided to move on from my the product I’ve been using for a few years now. Having seen the reviews for the Crystal Retinal, I thought I’d give it a go. I’m glad I did. It has a nice texture when applied and doesn’t dry out the skin. I’ve noticed a visible difference in how much better my skin looks after only a couple of weeks.
Date published: 2025-10-27
Rated 5 out of 5 by from Excellent! This is one of my favourite products. Love it and recommend it.
Date published: 2025-10-26
Rated 5 out of 5 by from Magic I am glad I decided to buy this retinal I can already see improvement in my skin with adding this to my skin routine i have not had any reactions so that is fantastic and my next order i think I need a 10 in this retinal , the benfits to the skin are amazing and I can honestly say without a doubt its better than anything I have used before and I have tried alot of skincare brands claiming to do wonders for your skin and wrinkles. my skin is mature and have quite alot of wrinkles and I know no cream will make them disappear but my wrinkles are softer to the eye and with my other medik8 products I have bought together and using in my skin routine for the last 5 week I can see changes of improvement in my skin
Date published: 2025-10-26
Rated 5 out of 5 by from Truly a standout product! I keep trying other retinols, but I always end up coming back to this one. Nothing else gives me the same results — it’s gentle, effective, and my skin just loves it.
Date published: 2025-10-23
Rated 5 out of 5 by from Love this. My skin is Love this. My skin is clear and I don’t get spots and pimples like with other retinol products. Great formula.
Date published: 2025-10-23
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I am on retinal 3 at the moment can I move up to 6 now 

Asked by: Thera
If you have used retinal 3 for a while and your skin is okay with it, then yes I would say you can try 6. 
Answered by: Rachel
Date published: 2024-09-04

Can I use this serum under eyes?

Asked by: Anonymous
I think it might be too potent for under eye 
Answered by: Anonymous
Date published: 2024-07-19
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