Medik8 Black Friday 2025: Save 25% on Bestselling Retinal Serums
Medik8 Black Friday 2025: 25% Off Retinal Serums

As Black Friday weekend draws to a close, skincare enthusiasts have a final chance to secure premium anti-ageing products at a significant discount. The British beauty brand Medik8, renowned for its science-backed formulas, is extending its sale event into Cyber Monday.

Unmissable Savings on Expert-Approved Skincare

The brand is offering a substantial 25 per cent discount across its entire website. Furthermore, shoppers can receive a complimentary gift with orders over £120, or unlock up to five free gifts valued at £110 when spending exceeds £150. This promotion includes the brand's highly acclaimed Crystal Retinal serum range, a favourite among beauty editors and consumers alike.

Medik8 has carved a niche in the high-end skincare market by focusing on potent, no-nonsense formulations. While budget-conscious buyers might turn to brands like The Ordinary, Medik8 appeals to those seeking professional-grade results without the extravagant packaging and fragrance of ultra-luxury names such as La Mer. The brand's philosophy centres on targeted solutions for concerns like hyperpigmentation and fine lines.

Inside the Crystal Retinal Range: Potency for Every Level

The star of the sale is the Crystal Retinal collection, which uses retinaldehyde—a form of vitamin A known to be stronger and faster-acting than traditional retinol. The serums are designed to boost firmness and minimise the appearance of fine lines within weeks.

Medik8 Crystal Retinal 10: Previously priced at £89, now reduced to £66.75. Beauty editor Lucy Partington hailed this as the best high-strength retinal, cautioning users to introduce it slowly into their routines. Medik8 recommends this potency for advanced vitamin A users.

Medik8 Crystal Retinal 6: Down from £69 to £51.75. This is considered the brand's most popular strength, ideal for regular users. The article's author notes personal use, reporting springier, smoother skin free from dullness after approximately three weeks of nightly application.

Medik8 Crystal Retinal 3: Now £36.75, reduced from £49. This entry-level strength is perfect for first-time retinal users. Skincare expert Helen Wilson-Beevers praised its texture and recommended those with sensitivity 'sandwich' the product between layers of moisturiser.

Beyond Retinal: Other Award-Winning Deals

The sale also presents an opportunity to trial other Medik8 bestsellers. The multi-award-winning Liquid Peptides, clinically proven to reduce the look of smile lines in minutes and deeper wrinkles over eight weeks, is included in the discount. Normally £79, it is now available for £59.25. Mature skin writer Jane Cunningham reviewed it, noting it left her skin feeling softer.

The sale event, reported on Monday 1st December 2025, provides a final window for consumers to invest in their skincare regimen with professional-grade products at a fraction of the usual cost. With endorsements from figures like Hailey Bieber and Caroline Hirons, Medik8's Black Friday and Cyber Monday promotion is a standout in the beauty deals landscape.