SKU: 27973599140

Medik8 - Crystal Retinal 1 Night Serum 30ml

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Description

Medik8 - Crystal Retinal 1 Night Serum 30mlDESCRIPTION Retinaldehyde is the star of Crystal Retinal; a next generation form of vitamin A that is proven to deliver results up to 11x faster than retinol[1]. Yes, this is retinAL, faster acting than retinOL, the classic form of vitamin A. Anti Ageing Rediscover youthful skin with Crystal Retinal 1, Medik8s latest innovation in vitamin A. Formulated with 0. 01% stabilised retinal, a powerful derivative of vitamin A with next generation anti ageing

DESCRIPTION

Retinaldehyde is the star of Crystal Retinal; a next-generation form of vitamin A that is proven to deliver results up to 11x faster than retinol[1]. Yes, this is retinAL, faster-acting than retinOL, the classic form of vitamin A.

Anti Ageing

Rediscover youthful skin with Crystal Retinal 1™, Medik8’s latest innovation in vitamin A. Formulated with 0.01% stabilised retinal, a powerful derivative of vitamin A with next-generation anti-ageing results. Unmatched in its age-defying power, retinal can deliver results comparable to clinical-grade vitamin A up to 11 times faster than classic forms of retinol. The ground-breaking overnight serum visibly minimises fine lines and wrinkles; firming and plumping the complexion to resurface skin texture and soften the face. Featuring hyaluronic acid, glycerin and vitamin E, it hydrates skin at every level to deliver a supple, even-toned, more youthful-looking complexion. More than that, it actively helps reduce blemish-causing bacteria to keep skin clear and balanced. In just 4 weeks, skin is noticeably younger, smoother and undeniably radiant.2

Crystal Retinal 1 is the entry level retinal serum for those who have sensitive skin or seek a low strength but highly effective vitamin A serum in their routine.

1 G. Seigenthaler et al., Biochemical Journal, 1990, 268, pp 371-378
2 Independent user trial carried out over 8 weeks using Crystal Retinal 6. Individual results may vary.

KEY BENEFITS

Supercharge the results of your night-time regime. Reducing the appearance of fine lines in just 4 weeks,3 Crystal Retinal visibly plumps and refines the skin for a more youthful looking complexion. The innovative formula has all the anti-ageing, radiance-boosting and clarifying benefits of retinol, plus the same low irritation. But armed with high-performance retinal, it is able to provide visible results up to 11x faster. The naturally peach-coloured serum-cream sinks effortlessly into skin to nurture and smooth the complexion. Featuring a natural comforting aroma of vanilla and tonka bean, it leaves skin strengthened, hydrated and ready for overnight rejuvenation.

HOW IT WORKS

Clinical-grade vitamin A, otherwise known as retinoic acid, is an exceptionally powerful skincare ingredient for youthful-looking skin. Highly potent and wildy efficacious, it helps reduce the visible signs of ageing. Retinoic acid is only available with a prescription, but vitamin A is available over the counter in the form of retinol skincare products. Retinol has similar effects to retinoic acid, however it must first be converted to retinaldehyde and then to retinoic acid to be used by the skin. Crafted with retinaldehyde, Crystal Retinal 1 requires just one conversion to retinoic acid. This means that it is able to produce results comparable to retinoic acid up to 11 times faster than classic forms of retinol. The advanced active is carefully encapsulated in a crystal structure that is broken down by the skin’s natural enzymes when topically applied. This ensures maximum stability and absorption while allowing the vitamin A active to be released gradually into the skin while you sleep for minimal irritation. Combined with hydrating hyaluronic acid and skin-soothing vitamin E, Crystal Retinal 1 targets fine lines and wrinkles for smooth and visibly youthful skin. Unlike other forms of vitamin A, retinaldehyde boasts direct, powerful antibacterial properties. This allows it to target acne-causing bacteria; promoting a healthy, visibly clear complexion.

3 Independent user trial carried out over 8 weeks using Crystal Retinal 6. Individual results may vary.

Patented Stability Matters

The more stable the molecule, the more effective it can be on the skin. Crystal Retinal offers a level of retinal stability that is only found at Medik8: our innovative stability system features our renowned crystal encapsulation and a patent-pending formula complex. The dual-layered stability system comes together to protect the retinal molecule for unmatched potency and long-lasting effectiveness.

Ladder Up

Always peak, never plateau. Ladder up your results with 5 available strengths: 1, 3, 6, 10 and 20. Most customers start on Crystal Retinal 3 (for skincare beginners) or 6 (for experienced skincare users), then over time move up to 10. 

Top tip! Crystal Retinal is also the perfect vitamin A for those wanting to target the appearance of blemishes and congestion due to retinal’s unique antibacterial action on the skin.

Retinal Results

The leader of retinal vitamin A skincare innovation, the powers of Crystal Retinal are loved by customers and skin professionals alike. The ground-breaking formula works fast to deliver the clinically proven benefits that sets Crystal Retinal above the rest.

THE SCIENCE BEHIND

“After years of research and experimentation, we cracked the retinal code in 2018 with a unique stabilisation discovery. Our reinforced stability system involves two formulation techniques. First, we protected the powerful yet fragile molecule with a crystal encapsulation that works to both blanket the retinal and time-release it onto our skin gradually throughout the night to minimise any potential for irritation. We then fortified this with a patent-pending stabilisation formula complex, which is unique to Medik8, to ensure the retinal is stabilised throughout its whole life cycle - from raw material, all the way onto our skin. This means that your Crystal Retinal remains powerful from the first application, to the very last".

Daniel Isaacs, Director of Research

HOW TO USE

After cleansing in the evening, massage a small amount of Crystal Retinal 1 across the face, neck and and décolletage. Allow to absorb before applying your moisturiser.

Crystal Retinal 1 application should be phased in gradually. Use twice a week for the first 2 weeks, every other night for the next 2 weeks, then every night. Always wear sunscreen the following morning while using this product, and for 1 week after. Consult a doctor if breastfeeding or pregnant.

Shipping Notes
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Exchange/Return Notes
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SKU: 27973599140

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Jazzy
Whiting, US
★★★★★ 5
Basic Sunscreen, Nice Smell
Size: 6.7 Fl Oz (Pack of 1)
Good smell, came packaged well. No issues so far. Will update if it doesn't work well under the summer sun.
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Reviewed in the United States on May 3, 2026
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Karlie
Natrona Heights, US
★★★★★ 4
It works
Size: 6.7 Fl Oz (Pack of 1)
Well this product works. At first I thought maybe the Caribbean sun wasn’t as bad as people said since I was in the sun for 4 days wearing this sunscreen and hardly had tan lines, then I tested my theory for 1 day with another brand and got a sunburn. I took star off (would really only do a half if it allowed) for when you go in the water or if you sweat there is a bit of white residue that it leaves. But for sun purposes, if you want protection, I highly recommend.
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Reviewed in the United States on January 5, 2026
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Gabriele Testore
Louisville, US
★★★★★ 5
A must have for superior sun protection!
Size: 6.7 Fl Oz (Pack of 1), Size: 6.7 Fl Oz (Pack of 1)
Neutrogena Beach Defense SPF 50 is an absolute game-changer when it comes to sun protection. Whether you're relaxing at the beach, swimming, or enjoying an outdoor adventure, this sunscreen provides broad-spectrum protection that effectively shields the skin from harmful UVA and UVB rays. One of its standout features is its lightweight texture, it glides effortlessly onto the skin without feeling greasy or heavy. Unlike some sunscreens that leave a sticky residue, Beach Defense absorbs quickly and smoothly, making it ideal for both face and body application. Another major plus? Water resistance! This formula stays put, even after swimming or sweating, ensuring continuous protection throughout the day. And despite its strong defense against the sun, it feels refreshing and comfortable on the skin, making reapplication a breeze. I used it during a vacation in the Dominican Republic, and me and my family enjoyed it. My 5 years old girl has been protected from the sun all the time. If you're looking for reliable, effective, and easy-to-use sun protection, this sunscreen is an excellent choice. Highly recommended! ☀️👌
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Reviewed in the United States on April 10, 2025
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Linda B. Williamson
Draper, US
★★★★★ 5
Great sunscreen
Size: 6.7 Fl Oz (Pack of 1)
Great sunscreen product.
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Reviewed in the United States on May 23, 2026
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Thomas E
Louisville, US
★★★★★ 5
Tan lines
Size: 6.7 Fl Oz (Pack of 1)
This sunscreen works great. It’s light and doesn’t feel greasy on your skin. I use it all the time.
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Reviewed in the United States on May 22, 2026

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