Crystal Retinal®

Award-winning Age-Defying Vitamin A Night Serum Full Details

  • Benefits
  • Renew
  • Firm
  • Smooth
A silver pump tube of Medik8 Crystal Retinal 6 resting on a diagonal swatch of its peach-coloured cream against a clean white background. Text on the right features a silver wreath badge reading "WINNER OF 45+ GLOBAL AWARDS" and claims it is the "No.1 Retinal SERUM WORLDWIDE."
Medik8 Crystal Retinal 6 serum tube on a dark blue background with spot-lighting. Headline text states "Discover The No.1 Retinal Serum Worldwide*". Beside it are two silver badges: "WINNER OF 45+ GLOBAL AWARDS" and "WORLD FIRST PATENTED TECHNOLOGY". A footnote cites Kline & Company market research.
A woman smiling while applying crystal retinal to her chee and a silver tube of Medik8 Crystal Retinal 6. Five bullet points with checkmarks list product benefits: Clinically proven wrinkle reduction in 7 days, Clinically proven to visibly firm, smooth, brighten & lift skin in 1 tube, Clinically proven to reduce visible dark spots by 20%, 94% agreed Crystal Retinal promoted visibly clearer skin, and 100% agreed Crystal Retinal was gentle on their skin.
A before-and-after comparison of a participant's forehead shows visibly improved skin after one tube of Medik8 Crystal Retinal. Text states 97% of people felt their skin had a more youthful appearance*.
An infographic titled "THE 4 Ps" against a dark, glowing background, featuring a Medik8 Crystal Retinal 6 tube with a dashed line circling it. Text outlines four key pillars: "Unrivalled Potency" for prescription-like strength, "Patented Stability" for maximum effectiveness, "Professional Grade Results" for clinically proven wrinkle reduction in 7 days, and "Progressive Strengths" for building skin tolerance.
A before-and-after comparison of a person's forehead shows visible improvement in fine lines and wrinkles after one tube of Crystal Retinal. Text states 9/10 agree this is the best anti-ageing serum they have ever used.
An infographic titled "CRYSTAL ENCAPSULATION" on a dark blue gradient background. A 3D illustration shows a crystalline diamond shape encapsulating a smaller sphere. A checklist details benefits: Protects retinal potency, Time release technology, Secures retinal stability, and Delivers controlled power for gentle yet effective results. A footnote references a 12-week clinical study on Crystal Retinal 6
A square banner on a dark blue background showcasing the Medik8 Crystal Retinal ladder on crystal plinths. Text reads "CLINICALLY PROVEN TO IMPROVE EVERY KEY SIGN OF AGEING AS YOU MOVE UP IN STRENGTH*". Labels indicate the target user for each strength, from Strength 1 "For sensitive skin" up to Strength 24 "For expert users". A footnote details the 24-week clinical study on the ladder.
A visual guide to Crystal Retinal's 6 PROGRESSIVE STRENGTHS, displayed as swatches of peach-toned cream. Strengths range from 1 for sensitive skin up to Strength 24 for expert vitamin A users, with descriptions for each level.
Dr. Bibi Ghalaie, Cosmetic Physician, smiles while holding a silver tube of Crystal Retinal. A quote from her states: The award-winning Crystal Retinal range has a strength ladder which means I can recommend vitamin A to every patient with any skin type.
Dr. Ewoma Ukeleghe, is shown smiling while holding two silver tubes of Crystal Retinal. A quote from her states: When it comes to recommending a retinoid, my unwavering choice is Crystal Retinal. This exceptional product has become my top recommendation for both patients and followers, thanks to its remarkable effectiveness and pioneering approach to skincare.
A HOW TO LAYER diagram for a PM skincare routine. It includes Cleanse (Lipid-Balance Cleansing Oil), Target (Hydr8 B5 Intense), Vitamin A (Crystal Retinal), Eyes (Crystal Retinal Ceramide Eye), and Moisturise (Advanced Night Restore).
A graphic titled THE CSA PHILOSOPHY outlines the three-step anti-aging skincare approach. It illustrates BRIGHTENS with Vitamin C serum (AM), PROTECTS with Sunscreen (AM), and RENEWS with Vitamin A product (PM)
Crystal Retinal®
Crystal Retinal®
Crystal Retinal®
Crystal Retinal®
Crystal Retinal®
A silver pump tube of Medik8 Crystal Retinal 6 resting on a diagonal swatch of its peach-coloured cream against a clean white background. Text on the right features a silver wreath badge reading "WINNER OF 45+ GLOBAL AWARDS" and claims it is the "No.1 Retinal SERUM WORLDWIDE."
Medik8 Crystal Retinal 6 serum tube on a dark blue background with spot-lighting. Headline text states "Discover The No.1 Retinal Serum Worldwide*". Beside it are two silver badges: "WINNER OF 45+ GLOBAL AWARDS" and "WORLD FIRST PATENTED TECHNOLOGY". A footnote cites Kline & Company market research.
A woman smiling while applying crystal retinal to her chee and a silver tube of Medik8 Crystal Retinal 6. Five bullet points with checkmarks list product benefits: Clinically proven wrinkle reduction in 7 days, Clinically proven to visibly firm, smooth, brighten & lift skin in 1 tube, Clinically proven to reduce visible dark spots by 20%, 94% agreed Crystal Retinal promoted visibly clearer skin, and 100% agreed Crystal Retinal was gentle on their skin.
A before-and-after comparison of a participant's forehead shows visibly improved skin after one tube of Medik8 Crystal Retinal. Text states 97% of people felt their skin had a more youthful appearance*.
An infographic titled "THE 4 Ps" against a dark, glowing background, featuring a Medik8 Crystal Retinal 6 tube with a dashed line circling it. Text outlines four key pillars: "Unrivalled Potency" for prescription-like strength, "Patented Stability" for maximum effectiveness, "Professional Grade Results" for clinically proven wrinkle reduction in 7 days, and "Progressive Strengths" for building skin tolerance.
A before-and-after comparison of a person's forehead shows visible improvement in fine lines and wrinkles after one tube of Crystal Retinal. Text states 9/10 agree this is the best anti-ageing serum they have ever used.
An infographic titled "CRYSTAL ENCAPSULATION" on a dark blue gradient background. A 3D illustration shows a crystalline diamond shape encapsulating a smaller sphere. A checklist details benefits: Protects retinal potency, Time release technology, Secures retinal stability, and Delivers controlled power for gentle yet effective results. A footnote references a 12-week clinical study on Crystal Retinal 6
A square banner on a dark blue background showcasing the Medik8 Crystal Retinal ladder on crystal plinths. Text reads "CLINICALLY PROVEN TO IMPROVE EVERY KEY SIGN OF AGEING AS YOU MOVE UP IN STRENGTH*". Labels indicate the target user for each strength, from Strength 1 "For sensitive skin" up to Strength 24 "For expert users". A footnote details the 24-week clinical study on the ladder.
A visual guide to Crystal Retinal's 6 PROGRESSIVE STRENGTHS, displayed as swatches of peach-toned cream. Strengths range from 1 for sensitive skin up to Strength 24 for expert vitamin A users, with descriptions for each level.
Dr. Bibi Ghalaie, Cosmetic Physician, smiles while holding a silver tube of Crystal Retinal. A quote from her states: The award-winning Crystal Retinal range has a strength ladder which means I can recommend vitamin A to every patient with any skin type.
Dr. Ewoma Ukeleghe, is shown smiling while holding two silver tubes of Crystal Retinal. A quote from her states: When it comes to recommending a retinoid, my unwavering choice is Crystal Retinal. This exceptional product has become my top recommendation for both patients and followers, thanks to its remarkable effectiveness and pioneering approach to skincare.
A HOW TO LAYER diagram for a PM skincare routine. It includes Cleanse (Lipid-Balance Cleansing Oil), Target (Hydr8 B5 Intense), Vitamin A (Crystal Retinal), Eyes (Crystal Retinal Ceramide Eye), and Moisturise (Advanced Night Restore).
A graphic titled THE CSA PHILOSOPHY outlines the three-step anti-aging skincare approach. It illustrates BRIGHTENS with Vitamin C serum (AM), PROTECTS with Sunscreen (AM), and RENEWS with Vitamin A product (PM)
Crystal Retinal®
Crystal Retinal®
Crystal Retinal®
Crystal Retinal®
Crystal Retinal®

Crystal Retinal®

Award-winning Age-Defying Vitamin A Night Serum Full Details

  • Benefits
  • Renew
  • Firm
  • Smooth
Not available for purchase

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Guide To Layering

Step 1: Cleanse
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£25 / 150ml
Step 2: Target
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£79 / 30ml
Step 3: Renew
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£45 / Sensitive
Step 4: Moisturise
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£60 / 50ml

Reveal younger-looking skin with just 1 tube of Crystal Retinal. Our iconic vitamin A night serum is clinically proven to visibly smooth stubborn wrinkles, brighten dark spots, decongest and firm your skin - without irritation.[1]

Crystal Retinal contains retinAL; a next-generation vitamin A which acts 11x faster than standard retinOL.[2] And, unlike others, our patented retinal stability system ensures unmatched retinal potency and effectiveness until the very last drop.

It’s no wonder Crystal Retinal is the No.1 Retinal Serum Worldwide.[3]

Please Note: Product packaging shown may be different to the product received due to regional variations
Crystal Retinal®
KEY BENEFITS
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    Fast Wrinkle Reducing Power

    See clinically proven wrinkle reduction with just 1 tube[1]

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    Professional-Grade Results

    Retinaldehyde is proven to work up to 11 times faster than standard retinol[2] - so you can see results sooner

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    Radiant, Youthful Skin

    Delivers remarkable visible improvement in texture, brightness, firmness & clarity

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    Effective Results Until the Last Drop

    Thanks to Medik8's patented stability complex

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    Customise Your Routine With 6 Progressive Strengths

    A retinal strength for beginners to expert users - even sensitive skin
PROVEN RESULTS
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BEFORE AFTER 10 DAYS
  • 97% felt their skin had a more youthful appearance[1]
  • 20% reduction in the appearance of wrinkles[1]
  • 20% reduction in visible hyperpigmentation[1]
  • 11% increase in visible skin firmness[1]
  • 100% felt Crystal Retinal was gentle on their skin[1]

[1] Proven via independent clinical study on Crystal Retinal 6. Tested on 33 participants over 12 weeks. [2] G. Siegenthaler et al., Retinol and retinal metabolism, Biochemical Journal, 1990, 268, pp 371-378. [3] Source: independent market research by Kline & Company analysing manufacturer-level retinal serum sales for 2025. To verify, visit: https://www.medik8.com/pages/claims
AVAILABLE STRENGTHS
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Only at Medik8, you can ladder up your visible age-defying results over time with Crystal Retinal's 6 progressive strengths. 

Offering 0.01% - 0.24% retinaldehyde, there’s a strength for everyone; from very sensitive skins to expert users. 

Take our easy quiz to find your strength. 
HOW TO USE
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Step 1

If you're new to Crystal Retinal we recommend a patch test at least 24 hours before first use. Learn how to patch test here.

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.

We recommend using at least 1 tube of your current Crystal Retinal strength before moving up the ladder to the next strength.
LOVED & RECOMMENDED
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  • Endorsement Icon 1

    When it comes to recommending a retinoid, my unwavering choice is Crystal Retinal. This exceptional product has become my top recommendation for both patients and followers, thanks to its remarkable effectiveness and pioneering approach to skincare.

    Dr Ewoma Ukeleghe
    Medical & Cosmetics Doctor
  • Skincare Expert

    Really helps keep skin smooth, while tackling fine lines.

    NADINE BAGGOTT
    Skincare Expert & Beauty Journalist
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    I swear by Medik8's Crystal Retinal Range - especially for nighttime use

    DR. JUSTINE KLUK
    Consultant Dermatologist
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    A true breakthrough in vitamin A skincare

    DANIEL ISAACS
    Chief Product Officer
KEY INGREDIENTS
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    Retinaldehyde

    Proven to work up to 11 times faster than standard retinol,[2] retinaldehyde (retinal for short) is a revolutionary form of vitamin A that effectively targets the appearance of fine lines and wrinkles, hyperpigmentation, uneven skin texture and loss of firmness - without irritation

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    Hyaluronic Acid

    With the ability to attract and retain more than 1,000 times its own weight in water, hyaluronic acid draws moisture into the upper layers of the skin; leaving the complexion hydrated and visibly supple.

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    Vitamin E

    A powerful antioxidant that provides additional antioxidant protection against the ageing effects of free radicals. It also helps to boost the power of vitamin C for optimum visible results.

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    Glycerin

    A natural humectant which traps moisture within the skin to leave it hydrated and comfortable.

  • Full Ingredients
SUSTAINABILITY CLAIMS
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Provenance provides confidence for sustainability claims; helping to prevent ‘green-washing’ and empowering conscious consumers to purchase in line with their values. Provenance ‘Proof Points’ are all third party verified and evidenced through supply chains.
GUIDE TO LAYERING
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Crystal Retinal®
Complete Your Regime