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For seasoned retinoid users seeking unparalleled anti-ageing power, Medik8 Crystal Retinal 20 offers the highest strength in the iconic Crystal Retinal range. Featuring 0.2% encapsulated retinaldehyde, this clinic-exclusive night serum delivers visibly smoother, firmer, and more youthful-looking skin up to 11x faster than traditional retinol.

Key Benefits:

  • 11x Faster than Classic Retinol – Retinaldehyde accelerates skin renewal for rapid improvements in texture and tone.

  • 🔬 Targets Deep Lines & Wrinkles – Boosts collagen production to visibly firm, plump, and lift mature skin.

  • 🌙 Powerful Night Treatment – Works overnight to resurface and smooth without compromising hydration.

  • 💧 Hydrating Formula – Infused with hyaluronic acid, glycerin, and vitamin E to nourish and support the skin barrier.

  • 🧪 Advanced Strength for Experts – Designed only for those who have completed two tubes of Crystal Retinal 10™.

How to Use:

  1. Evening only – after cleansing, apply a pea-sized amount to the face and neck.

  2. Follow with your Medik8 moisturiser.

  3. Use 2-3 times per week initially, then gradually increase to nightly use as tolerated.

  4. Always follow with SPF in the morning.

⚠️ Crystal Retinal 20 is a high-strength formula. Do not use if you haven’t completed at least two full tubes of Crystal Retinal 10™.
🧪 Patch test before first use.

Skin Type:

✔ Suitable for normal, oily, combination, and mature skin. Not recommended for sensitive or reactive skin.


Why Shop at GlamGlobal.co.uk?
💯 100% Genuine Medik8 Products
🚚 Fast UK Shipping + Global Delivery
🏆 Trusted by Skincare Professionals

Unlock clinical-grade results at home with Medik8 Crystal Retinal 20 – available now at GlamGlobal.co.uk.

Orders & Shipping

About Glam Global UK

Glam Global UK is a genuine business registered in England under Glamglobal Ltd  (Company No: 15456055). Our office headquarters is located at GlamGlobal Ltd
27 Old Gloucester Street
London, WC1N 3AX

Order Processing

We process all orders within 1-2 business days at our UK-based warehouse. Unfortunately, we cannot make changes to an order after it is placed. Please ensure all details are correct when checking out.

During high volume periods, processing can take up to 5 business days. You will receive confirmation when your order ships with tracking details to monitor its progress directly via Royal Mail.

Shipping Policies

UK Orders

  • Free standard shipping on orders over £50
  • Delivered by Royal Mail within 5-7 business days

Shipping Details:

  • Origin of Shipments: Some of our products are shipped from our warehouses in the United States or Korea. This allows us to offer you a diverse range of quality products. We want to assure you that all items are carefully selected and undergo strict quality control before dispatch.

  • Estimated Delivery Time: Please allow 7-10 days for delivery, considering the additional time required for shipments from the United States or Korea. This ensures that your orders reach you securely and in excellent condition. Please note any tax from International Delivery is included in your price paid at checkout.

International Delivery to UK Tax:

  • Included in Price: Please note that any tax from international delivery is already included in the price you paid at checkout. This is to provide you with a seamless and transparent shopping experience, and there will be no additional charges upon delivery.

Order Changes: Once an order is placed, we regret to inform you that we cannot make changes to it. Therefore, please double-check all details during the checkout process to ensure accuracy.

International Orders from countries other then the United Kingdom 

  • Shipping fee calculated at checkout based on destination
  • Import duties and taxes may apply upon delivery

Returns Policy

  • 90 day return window
  • Original shipping fees are non-refundable
  • Contact customer service to initiate a return