Medik8 Crystal Retinal 6
You'll earn 69 Status Points with this product
£69.00
Or 4 interest free payments of £17.25 with clearpay
In stock | Usually dispatched within 24 hours

Making skin care simple, Medik8 takes the fuss out of caring for your complexion. Powered by three key ingredients: vitamin C, vitamin A and non-negotiable SPF, the brand's signature skin care saviours are famed for their potent potions. Enter: the Crystal Retinal 6 Serum (30ml), supercharging your routine with stable retinal for bouncy and plump skin.
Speed up the line-smoothing, brightening, firming and dark spot-diminishing process with the Crystal Retinal 6 Serum (30ml).
With a unique crystal structure, this superior serum ensures stability and maximum absorption while mitigating the look of redness. With the radiance-boosting, clarifying and retexturising benefits of retinol (without the sometimes scaly side-effects), this strengthens the appearance of skin overnight, delivering a visible difference 11 times faster than retinol. The addition of plumping and moisture-retaining hyaluronic acid and glycerin, alongside antioxidant vitamin E, makes this serum a true bathroom shelf staple.
Aqua (Water), Caprylic/Capric Triglyceride, Glycerin, Isododecane, Cetearyl Olivate, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Cyclodextrin, Eclipta Prostrata Extract, Cetearyl Alcohol, PPG-12/SMDI Copolymer, Sorbitan Olivate, Tocopheryl Acetate, Titanium Dioxide, Squalane, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Phenoxyethanol, Melia Azadirachta Leaf Extract, Hydroxypropyl Methylcellulose, Sodium Hyaluronate, Tetrahexyldecyl Ascorbate, Rubus Chamaemorus (Cloudberry) Seed Oil, Pentylene Glycol, Retinal, Alumina, Isostearic Acid, Lecithin, Polyglyceryl-3 Polyricinoleate, Polyhydroxystearic Acid, Sodium Polyaspartate, Climbazole, Disodium EDTA, Daucus Carota Sativa (Carrot) Seed Oil, Hydroxyacetophenone, Lonicera Japonica (Honeysuckle) Flower Extract, Ethylhexylglycerin, Lonicera Caprifolium (Honeysuckle) Flower Extract, 3-O-Ethyl Ascorbic Acid, Dipteryx Odorata (Tonka) Bean Extract, Stearic Acid, Moringa Oleifera Seed Oil, Polysorbate 60, Sorbitan Isostearate, Vanilla Planifolia (Vanilla) Fruit Extract, Decylene Glycol, BHT, 1,2-Hexanediol, Coumarin.
For the latest information, it is recommended to review the ingredient list printed on the packaging of the product prior to usage or consumption.
After cleansing in the evening, massage a small amount across the face, neck and décolletage. Allow to absorb before applying your moisturiser. Use twice a week for the first two weeks, every other night for the next two weeks, then every night. Always wear sunscreen the following morning while using this product, and for one week after.
Transparency lies at the heart of our philosophy which is why we have partnered with tech-platform – Provenance – to cut through the industry ‘noise’ and equip you with key facts that matter. A 'proof point' with a green tick means a third party has verified the accuracy of the statement whereas no green tick means that there isn't independent confirmation (yet!), but that the brand has still supplied substantiating evidence (which you can view yourself). Discover the proof points for this product below.
Frequently Bought Together
Other Customers Bought
Customer Reviews
5 stars rating 325 reviews
4 stars rating 48 reviews
3 stars rating 4 reviews
2 stars rating 2 reviews
1 stars rating 2 reviews
Top Customer Reviews
Thanks for sharing your thoughts! Please remember that results will vary from person to person. We're proud to say that all customer reviews are independent, authentic and do not represent the views of Cult Beauty or The Hut Group.
Looks like it’s working!
I’ve only used this twice a week for 2 weeks (along with the Tetra C serum in the morning). You can tell it’s quite strong but since I’ve been using other retinol products I think it’s going to be fine and I can already see some good results.
by Felicity Verified Purchase
Was this helpful?
No irritation and nice formula
I’ve only been using this for 2 weeks having moved up from retinal 3 but so far so good with no irritation.
by Emelda Verified Purchase
Was this helpful?
Best I’ve used
I get really irritated skin from these products normally but this is really gentle. I started with 3 and now using 6, I can use it daily with no issues
by Emma Verified Purchase
Was this helpful?
I’m working my way up
I’ve just started using Retinal 6 after receiving retinal 3 in a cult beauty goodie bag. If you follow the directions to a T, you will be amazed at what this stuff can do. I saw results with the retinal 3 after 4 weeks as my skin steadily got use to the formula so I’m expecting even great things with 6. The products is applied well and I always follow with a really nourishing moisturiser as the retinal can leave your skin feeling dry, so I’m using with this Youth to the People their kale moisturiser and it’s feels great. My skin feels nourished and a more even tone by the morning
by Victoria Verified Purchase
Was this helpful?
Fab product
Great product that I see working on my skin in a couple of weeks. Also using with the vitamin c and getting great results
by Erin Verified Purchase
Was this helpful?
Medik8 6
Early days, but happy with this product. My skin tends to react immediately if it doesn't like a retinol. So far waking up to smooth skin without any redness or peeling.
by gaily Verified Purchase
Was this helpful?
Brilliant
Works a treat love the texture and the smell
by Anonymous Verified Purchase
Was this helpful?
GAME CHANGER
After using a prescription strength retinol I found it too strong for my skin however this has been prefect!! Perfect for those with sensitive skin no irritation just amazing soft skin!
by Rav Verified Purchase
Was this helpful?
Good product
I’m really enjoying this retinol. I previously used a Skinceuticals one that is double the price, but I’m having the same effects with this one. It has a lovely apricot perfume.
by Laura Verified Purchase
Was this helpful?
Medik8 can do no wrong!
This will hands down always been my favourite serum. It’s lightweight, absorbs beautifully and doesn’t irritate. And after a few months of using, I am starting to see real results with both my wrinkles and my hyperpigmentation. Plus it’s fantastic when I’m having a hormonal breakout. Looking forward to levelling up to strength number 10!
by Alexandra Verified Purchase
Was this helpful?