No.1 Retinal Serum Worldwide*
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Reveal younger-looking skin with just 1 tube of Crystal Retinal.[2]
This iconic vitamin A night serum contains next-generation retinAL, clinically proven to act 11x faster than standard retinOL[3] to visibly smooth, brighten, decongest and firm your skin.
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Deluxe Sample Crystal Retinal 10
Deluxe Sample Crystal Retinal 10
0.10% Retinal- Advanced strength
{ "session_key":"template--18562512715962__aa72633a-1962-494a-b356-32b7e02e55a9", "section_id":"template--18562512715962__aa72633a-1962-494a-b356-32b7e02e55a9", "validation":{ "samples_use_global_max":true, "upsell":true, "customer":{ "current":{ "id":null, "tags":null, "email": null, "orders_count": null, "upsell_offer_id_history":null }, "required":{ "logic_allow_reorder":false } }, "offer_id": "template--18562512715962__aa72633a-1962-494a-b356-32b7e02e55a9", "max_items":1, "validation_error_message": "Your cart contains inelegible offers" }, "translations":{ "add_to_bag": "Add to Bag", "sample_in_bag":"This sample is in your bag", "max_samples_in_bag":"Samples limit reached" } }*Source: independent market research by Kline & Company analysing manufacturer-level retinal serum sales between December 2024 and November 2025. To verify, visit: medik8.com/claims
[2]Proven via independent clinical study on Crystal Retinal 6. Tested on 33 participants over 12 weeks.
[3]Shorter reference (for visual content/assets): Biochem J., 1990, 268, pp 371-378
*Proven via independent clinical study on Crystal Retinal 6. Tested on 33 participants over 12 weeks.
*Proven via independent clinical study on the Crystal Retinal ladder tested on 30 participants over 24 weeks.
*Proven via independent clinical study on Crystal Retinal 6. Tested on 33 participants over 12 weeks.
[2]Proven via independent clinical study on Crystal Retinal 6. Tested on 33 participants over 12 weeks.
[3]Shorter reference (for visual content/assets): Biochem J., 1990, 268, pp 371-378
*Proven via independent clinical study on Crystal Retinal 6. Tested on 33 participants over 12 weeks.
*Proven via independent clinical study on the Crystal Retinal ladder tested on 30 participants over 24 weeks.
*Proven via independent clinical study on Crystal Retinal 6. Tested on 33 participants over 12 weeks.